Copyright of and ownership in the Images reside with Murray Robertson. Which element has a symbol that starts with a letter different from the first one in its name? Name: Zinc Symbol: Zn Atomic Number: 30 Atomic Mass: 65.39 amu Melting Point: 419.58 °C (692.73 K, 787.24396 °F) Boiling Point: 907.0 °C (1180.15 K, 1664.6 °F) Number of Protons/Electrons: 30 Number of Neutrons: 35 Classification: Transition Metal Crystal Structure: Hexagonal Density @ 293 K: 7.133 g/cm 3 Color: bluish Atomic Structure Commercially, zinc is obtained from its ores by concentrating and roasting the ore, then reducing it to zinc by heating with carbon or by electrolysis. The atomic number for zinc is 30. Electron affinityThe energy released when an electron is added to the neutral atom and a negative ion is formed.    Halogens ››More information on molar mass and molecular weight. Allotropes Please enable JavaScript to access the full features of the site. Specific heat capacity is the amount of energy needed to change the temperature of a kilogram of a substance by 1 K. A measure of the stiffness of a substance. A shortage of zinc in the diet can lead to delayed healing, skin irritation and loss of the sense of taste, and encourages many chronic illnesses. Where the element is most commonly found in nature, and how it is sourced commercially. Because of its hazy origins, it's difficult to pin down one person as the discoverer of the element. Density: 7.134 grams per cubic centimeter 5. Medium = substitution is possible but there may be an economic and/or performance impact But where was it coming from and what was the risk to his health. SM95 The chemical symbol for Zinc is Zn . Atomic symbol (on the Periodic Table of Elements): Zn 3. Density (g cm−3) Zinc is … First isolated by. The transition of a substance directly from the solid to the gas phase without passing through a liquid phase. The number of atoms of the element per 1 million atoms of the Earth’s crust.    Atomic Number Zinc is a hidden star. Zinc Element 30 of Periodic table is Zinc with atomic number 30, atomic weight 65.409. CAS number The description of the element in its natural form. In use, Zinc is often hidden away, almost secretive. The atomic mass or relative isotopic mass refers to the mass of a single particle, and therefore is tied to a certain specific isotope of an element. A percentile rank for the political stability of the top producing country, derived from World Bank governance indicators. Au… Called Chinese white when it's used in paints, zinc oxide is a good absorber of ultraviolet light - so sun block often contains a suspension of tiny zinc oxide particles - as does most mineral-based makeup. Atomic Mass of Zinc Atomic mass of Zinc is 65.409 u. 12. If you are in any doubt, please ask. Its zinc–carbon single bond was calculated to be 1.864 Å long. The atomic mass or relative isotopic mass refers to the mass of a single particle, and therefore is tied to a certain specific isotope of an element. Galvanization is named after Luigi Galvani, the man who made frog legs twitch with electric current, but galvanization has nothing to do with electrical showmanship. SM95-1 (17.96439 eV) Ref. It is defined as being the charge that an atom would have if all bonds were ionic. The higher the value, the larger risk there is to supply. A silvery-white metal with a blue tinge. Zinc is a chemical element with symbol Zn and atomic number 30. Medium = substitution is possible but there may be an economic and/or performance impact, Low = substitution is possible with little or no economic and/or performance impact, If you wish to use the Images in a manner not permitted by these terms and conditions please contact the Publishing Services Department. Zinc is a chemical element with the symbol Zn and atomic number 30. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images. It provides atomic mass, mass excess, nuclear binding energy, nucleon separation energies, Q-values, and nucleon residual interaction parameters for atomic nuclei of the isotope Zn-80 (Zinc, atomic number Z = 30, mass number A = 80). If freshly formed zinc(II) oxide is inhaled, a disorder called the ‘oxide shakes’ or ‘zinc chills’ can occur. Melting point Zn is the 24 th most abundant element in Earth’s crust and has five stable isotopes. The images may not be posted on any website, shared in any disc library, image storage mechanism, network system or similar arrangement. Element Zinc (Zn), Group 12, Atomic Number 30, d-block, Mass 65.38. A measure of the propensity of a substance to evaporate. Zn +2 ion has 28 electrons and 35 neutrons. The percentage of a commodity which is recycled. It’s Elemental - The Periodic Table of Elements. The number of protons in an atom. It is brittle and crystalline at ordinary temperatures, but it becomes ductile and malleable at 100°C and 150°C.    Electron Configuration Phase at room temperature: Solid 6.    Other Metals It provides a measure of how difficult it is to extend a material, with a value given by the ratio of tensile strength to tensile strain. The temperature at which the liquid–gas phase change occurs. Zinc, chemical element, a low-melting metal of Group 12 of the periodic table, that is essential to life and is one of the most widely used metals. A higher recycling rate may reduce risk to supply. (Atomic mass of Zn - 65.41) (a) 200 g (c) 85 g (b) 25 g (d) 158 g A percentile rank for the political stability of the country with the largest reserves, derived from World Bank governance indicators. 30: Zinc - Zincum [Zn] Group: 12 Period: 4 Atomic number: 30 Atomic mass: 65.38 Configuration: [Ar] 3d 10 4s 2 Atomic radius: 142 pm Covalent radius: 122 pm Electron affinity: 0 eV Ionization energy: 9.3942 eV Electronic term: 1 S 0 Mass fraction in the earth crust: 0.000078 Mass fraction in the earth space: 0.0000003 Electronegativity: 1.65 We hope that you enjoy your visit to this Site. Even the origins of that evocative name are uncertain. It is defined as the equilibrium pressure exerted by the gas produced above a substance in a closed system. Classified as a transition metal, Zinc is a solid at room temperature. Zinc oxide is widely used in the manufacture of very many products such as paints, rubber, cosmetics, pharmaceuticals, plastics, inks, soaps, batteries, textiles and electrical equipment. The atomic number of each element increases by one, reading from left to right. Although zinc's history is more than a little hazy, there's no doubting its usefulness. Zinc can be carcinogenic in excess. Relative atomic mass These values were determined using several different methods. This is approximately the sum of the number of protons and neutrons in the nucleus. The sum of the oxidation states within a compound or ion must equal the overall charge. This week the chemical behind calamine lotion for itchy skin, anti dandruff shampoo for a flaky scalp and underarm deodorant for - well, I think we've probably all stood next to someone whom we wish knew a bit more about the chemistry of zinc. 2. The RSC maintains this Site for your information, education, communication, and personal entertainment. An East India Company ship which sank off the coast of Sweden in 1745 was carrying a cargo of Chinese zinc and analysis of reclaimed ingots showed them to be almost the pure metal. Here's Brian Clegg. It has a half life of around 4.3×10 18 year, which is so high that it is considered almost stable. Brass is easy to work and is a good electrical conductor. Nor shall the RSC be in any event liable for any damage to your computer equipment or software which may occur on account of your access to or use of the Site, or your downloading of materials, data, text, software, or images from the Site, whether caused by a virus, bug or otherwise. It provides atomic mass, mass excess, nuclear binding energy, nucleon separation energies, Q-values, and nucleon residual interaction parameters for atomic nuclei of the isotope Zn-80 (Zinc, atomic number Z = 30, mass number A = 80). Zinc - zinc - zinc - you can almost hear a set of coins falling into an old fashioned bath. Uncombined elements have an oxidation state of 0. With the middling atomic number 30, it has five stable isotopes of atomic weight from the dominant zinc 64 to zinc 70, plus an extra 25 radioisotopes. The percentage of the world reserves located in the country with the largest reserves. Like this one, that shows significant blind spots in the subject matter and are therefore anti-educational. A measure of how difficult it is to deform a material. The dictionary tells us that the word zinc comes from the German (with a K at the end instead of a C), but how that name came into being is unknown. In some respects zinc is chemically similar to magnesium: both elements exhibit only one normal oxidation state … Block Electron configuration The Chemical Abstracts Service registry number is a unique identifier of a particular chemical, designed to prevent confusion arising from different languages and naming systems. Elements are organised into blocks by the orbital type in which the outer electrons are found. The atomic mass is the mass of an atom. The mass of an atom relative to that of carbon-12. Zn I Ground State 1s 2 2s 2 2p 6 3s 2 3p 6 3d 1 0 4s 2 1 S 0 Ionization energy 75769.33 cm-1 (9.394199 eV) Ref.  Comments Katherine Holt will be here with all of the answers and the rest of the Radon story on next week's Chemistry in its Element, I do hope you can join us. Atomic number (number of protons in the nucleus): 30 2. Text © The Royal Society of Chemistry 1999-2011 Represented in the periodic table as Zn, zinc is a transition metal, grouped with cadmium and mercury. 30: Zinc - Zincum [Zn] Group: 12 Period: 4 Atomic number: 30 Atomic mass: 65.38 Configuration: [Ar] 3d 10 4s 2 Atomic radius: 142 pm Covalent radius: 122 pm Electron affinity: 0 eV Ionization energy: 9.3942 eV Electronic term: 1 S 0 Mass fraction in the earth crust: 0.000078 Mass fraction in the earth space: 0.0000003 Electronegativity: 1.65 ●The atomic mass of zinc is … This is where the 'galvanic' part of the name comes in. An integrated supply risk index from 1 (very low risk) to 10 (very high risk).    Date of Discovery Atomic weight (average mass of the atom): 65.38 4. Boiling point These blocks are named for the characteristic spectra they produce: sharp (s), principal (p), diffuse (d), and fundamental (f). We welcome your feedback. The transition of a substance directly from the solid to the gas phase without passing through a liquid phase. There are five stable isotopes of zinc, these include zinc-64, zinc-66, zinc-67, zinc68 and zinc-70. Zinc is a transition earth metal with atomic number 30 and represented in the Periodic Table with the symbol ‘Zn’ Zinc is one more of those advantageous metals that we make use of daily. Click hereto get an answer to your question ️ What is the mass in grams of 2.42 mol of zinc? For more information on the Visual Elements image see the Uses and properties section below. The arrangements of electrons above the last (closed shell) noble gas. Large quantities of zinc are used to produce die-castings, which are important in the automobile, electrical and hardware industries. In chemistry, the formula weight is a quantity computed by multiplying the atomic weight (in atomic mass units) of each element in a chemical formula by the number of atoms of that element present in the formula, then adding all … Zinc Element 30 of Periodic table is Zinc with atomic number 30, atomic weight 65.409. In some respects, zinc is chemically similar to magnesium: both elements exhibit only one normal oxidation state (+2), and the Zn and Mg ions are of similar size.    Noble Gases Zinc has the symbol Zn. About This Site Murray Robertson is the artist behind the images which make up Visual Elements. What is the atomic mass of carbon? Meanwhile, mass-spectrometric determinations yielded a higher value of Ar (Zn) = 65.387. Commercial use of the Images will be charged at a rate based on the particular use, prices on application. Note that, each element may contain more isotopes, therefore this resulting atomic mass is calculated from naturally-occuring isotopes and their abundance. In no event shall the RSC be liable for any damages including, without limitation, indirect or consequential damages, or any damages whatsoever arising from use or loss of use, data or profits, whether in action of contract, negligence or other tortious action, arising out of or in connection with the use of the material available from this Site. In fact electricity's role is surprisingly subtle. That surprise appearance on the breakfast table reflects another important side to zinc. The most common ore of zinc is sphalerite (zinc sulfide) and contains around 60% of zinc . The first reports of problems associated with radon gas in domestic buildings was in the United States in 1984, when an employee at a nuclear power plant began setting off the radiation detector alarms on his way. It is part of those elements which humans have been expanding for thousands of years. Mostly, it is present in the form of ores and minerals of copper and lead. The substance was known before - objects with zinc in them date back over 2,500 years, and the Romans used that gold coloured alloy - but zinc wasn't identified as a distinct material in the west until the seventeenth century. In the longer lasting alkaline batteries, the anode is formed from powdered zinc (giving more surface area for reaction), while the cathode is made up of the compound manganese dioxide. Electronegativity (Pauling scale)The tendency of an atom to attract electrons towards itself, expressed on a relative scale. You may not further copy, alter, distribute or otherwise use any of the materials from this Site without the advance, written consent of the RSC. A traditional dry cell has an outer zinc casing acting as the anode (confusingly the anode, usually thought of as positive, is the negative end of a battery), while a carbon rod provides the cathode, the positive electrode. Zinc's electrical capabilities also extend to the most popular batteries. A horizontal row in the periodic table. Zinc exposed to air will form a layer of zinc carbonate by reacting with carbon dioxide.This layer protects the … Group The unit of measure for mass is the atomic mass unit (amu). ; Zinc is the fourth most common metal used today (after iron, aluminum, and copper). Most zinc is used to galvanise other metals, such as iron, to prevent rusting. First ionisation energyThe minimum energy required to remove an electron from a neutral atom in its ground state. Zinc refining in China was carried out on a large scale by the 1500s. The unit of measure for mass is the atomic mass unit (amu).  Help High = substitution not possible or very difficult. Naturally occurring zinc (30 Zn) is composed of the 5 stable isotopes 64 Zn, 66 Zn, 67 Zn, 68 … If you wish to use the Images in a manner not permitted by these terms and conditions please contact the Publishing Services Department by email. Zinc is a chemical element and it is a member of group 12 and period 4 in the periodic table. In 1971, coulometric determinations yielded Ar (Zn) = 65.377 (3), whereupon the Commission changed the recommended value to 65.38 (1). When I was young and there was little in the way of sun block, sunburned skin would be lavishly coated in soothing pink calamine lotion. This is approximately the sum of the number of protons and neutrons in the nucleus. Learn more about the properties and uses of zinc in this article. The name is derived from the German, 'zinc', which may in turn be derived from the Persian word 'sing', meaning stone. The mass of an atom relative to that of carbon-12. Members of a group typically have similar properties and electron configurations in their outer shell. The temperature at which the liquid–gas phase change occurs. But zinc is different.    Number of Neutrons Zinc, symbol Zn, has a Simple Hexagonal structure and SlateGray color. But it is usually the German chemist Andreas Marggraf who wins the laurels as 'discoverer' for his 1746 experiment isolating zinc.    Alkali Metals    Metalloids It is found in soil and sea water. The earliest reference to zinc was in 1651. And that's just the start for this versatile oxide. SM95 Zn II Ground State 1s 2 2s 2 2p 6 3s 2 3p 6 3d 1 0 4s 2 S 1 / 2 Ionization energy 144892.6 cm-1 (17.96439 eV) Ref. In 1668, a Flemish metallurgist, P. Moras de Respour, reported the extraction of metallic zinc from zinc oxide, but as far as Europe was concerned zinc was discovered by the German chemist Andreas Marggraf in 1746, and indeed he was the first to recognise it as a new metal. Zinc is a lustrous, bluish-white metal. Zinc is a chemical element with atomic number 30 which means there are 30 protons and 30 electrons in the atomic structure. Density is the mass of a substance that would fill 1 cm3 at room temperature. Which element would you expect to have a higher mass: cadmium or zinc? Most common uses: The alloy brass contains copper and anywhere from 20-45% of zinc, depending upon the type of brass. The oxidation state of an atom is a measure of the degree of oxidation of an atom. The zinc ends up in various proteins, particularly in enzymes involved in the development of the body, digestion and fertility.    Alkaline Earth Metals A measure of how difficult it is to compress a substance. Zinc has a mass number of 65.38. All Rights Reserved. (1 u is equal to 1/12 the mass of one atom of carbon-12) Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol. Zinc, symbol Zn, has a Simple Hexagonal structure and SlateGray color. Zinc In 1961, the Commission recommended Ar (Zn) = 65.37 based on the chemical determinations. Zinc is found in several ores, the principal ones being zinc blende (zinc sulfide) and calamine (zinc silicate). Some foods have above average levels of zinc, including herring, beef, lamb, sunflower seeds and cheese. Zinc is of considerable commercial importance. These blocks are named for the characteristic spectra they produce: sharp (s), principal (p), diffuse (d), and fundamental (f).    Rare Earth Elements, Basic Information | Atomic Structure | Isotopes | Related Links | Citing This Page. Political stability of top reserve holder. Atomic radius, non-bonded Values are given for typical oxidation number and coordination.    Transition Metals Zinc is a bluish-white, lustrous, diamagnetic metal. This is where the artist explains his interpretation of the element and the science behind the picture. A horizontal row in the periodic table. ●The atomic number of zinc is the number of protons in zinc's nucleus. SM95 Zn II Ground State 1s 2 2s 2 2p 6 3s 2 3p 6 3d 1 0 4s 2 S 1 / 2 Ionization energy 144892.6 cm-1 (17.96439 eV) Ref. This page was created by Yinon Bentor. Zinc, sometimes called spelter, is a chemical element.It is a transition metal, a group of metals.It is sometimes considered a post-transition metal.Its symbol on the periodic table is "Zn".Zinc is the 30th element on the periodic table, and has an atomic number of 30. Which element has the lowest atomic mass?    Non-Metals Some galvanization is more literally electrical - car bodies, for example, are electroplated with zinc to apply a thin, even layer. The Chemical Abstracts Service registry number is a unique identifier of a particular chemical, designed to prevent confusion arising from different languages and naming systems. A vertical column in the periodic table. The percentage of an element produced in the top producing country. Next, find the atomic number which … According to the Jefferson National Linear Accelerator Laboratory, the properties of zinc are: Atomic number (number of protons in the nucleus): 30 ... Atomic weight (average mass … Isotopes The RSC makes no representations whatsoever about the suitability of the information contained in the documents and related graphics published on this Site for any purpose. Weights of atoms and isotopes are from NIST article. Zinc is a transition metal element. Gold. You've only got to look at a galvanized metal roof or bucket to see zinc at work. Zinc is the 24th most abundant element in Earth's crust and has five stable isotopes. It is given by the ratio of the shear stress to the shear strain. Zinc is a slightly brittle metal at room temperature and has a blue-silvery appearance when oxidation is removed. Welcome to "A Visual Interpretation of The Table of Elements", the most striking version of the periodic table on the web. The arrangements of electrons above the last (closed shell) noble gas. Images © Murray Robertson 1999-2011 Download our free Periodic Table app for mobile phones and tablets. Copyright © 1996-2012 Yinon Bentor. Atomic number The zinc–carbon bond lengths of A (1.9847 Å), B (1.8871 Å), and of the monocation ZnCH 2 + (1.8666 Å) were also calculated. The atomic number of each element increases by one, reading from left to right. Low = substitution is possible with little or no economic and/or performance impact. It provides atomic mass, mass excess, nuclear binding energy, nucleon separation energies, Q-values, and nucleon residual interaction parameters for atomic nuclei of the isotope Zn-58 (Zinc, atomic number Z = 30, mass number A = 58). agreement. With zinc also appearing in anti-dandruff shampoos in the form of zinc pyrithione and in underarm deodorants as zinc chloride, this is an element that even makes us more attractive to the opposite sex. It was first recognised as a metal in its own right in India and the waste from a zinc smelter at Zawar, in Rajasthan, testifies to the large scale on which it was refined during the period 1100 to the 1500. Atomic Mass of Zinc Atomic mass of Zinc is 65.409 u. An alchemical symbol for zinc is against an abstract background inspired by zinc roofing materials. Some elements exist in several different structural forms, called allotropes. I’d really love to know where these questions come from. Galvanised steel is used for car bodies, street lamp posts, safety barriers and suspension bridges. Half of the distance between two atoms within a single covalent bond. A vertical column in the periodic table. According to the Jefferson National Linear Accelerator Laboratory, the properties of zinc are: 1. The tendency of an atom to attract electrons towards itself, expressed on a relative scale. Zn I Ground State 1s 2 2s 2 2p 6 3s 2 3p 6 3d 1 0 4s 2 1 S 0 Ionization energy 75769.33 cm-1 (9.394199 eV) Ref. Atomic Number = 30, Atomic Mass = 65.39, 30 protons, 30 electrons, 35 neutrons. The temperature at which the solid–liquid phase change occurs. Note that, each element may contain more isotopes, therefore this resulting atomic mass is calculated from naturally-occuring isotopes and their abundance. ››More information on molar mass and molecular weight. We're rarely aware of it, unlike its flashier neighbours in the period table, but zinc is a workhorse element that helps us all. Density is the mass of a substance that would fill 1 cm. It stops iron rusting, soothes sunburn, keeps dandruff at bay, combines with copper to make a very familiar gold-coloured alloy and keeps us alive, but we hardly notice it. This Site has been carefully prepared for your visit, and we ask you to honour and agree to the following terms and conditions when using this Site. Although it seems to have been refined in India as early as the twelfth century, the earliest specific claim to have produced the metal was back in 1668, and a process for extracting zinc from its oxide was patented in the UK in 1738 by metal trader William Champion. The principal mining areas are in China, Australia and Peru. Boiling point: 1,665 F (907 … Each allotrope has different physical properties. You'll find it used in fire retardants and foods - where it fortifies the likes of breakfast cereals - in glass and ceramics, in glues and rubber. Elements are organised into blocks by the orbital type in which the outer electrons are found. There aren't many elements with names that are onomatopoeic. Values are given for typical oxidation number and coordination. It is the first element in group 12 (IIB) of the periodic table.    Crystal Structure, Element Groups: Pornographic, defamatory, libellous, scandalous, fraudulent, immoral, infringing or otherwise unlawful use of the Images is, of course, prohibited. In such cases we would ask you to sign a Visual Elements licence agreement, tailored to the specific use you propose. This is a list of chemical elements, sorted by atomic mass (or most stable isotope) and color coded according to type of element.Each element's atomic number, name, element symbol, and group and period numbers on the periodic table are given. These values were determined using several different methods. Zinc is essential for all living things, forming the active site in over 20 metallo-enzymes. Atoms of the same element with different numbers of neutrons. The mass numbers shown above are 64, 68, 67, and 66. You do not have JavaScript enabled. Zinc is the 24 th most abundant element in the Earth's crust. This is a list of chemical elements, sorted by atomic mass (or most stable isotope) and color coded according to type of element.Each element's atomic number, name, element symbol, and group and period numbers on the periodic table are given. The higher the value, the larger risk there is to supply. This blue-grey metal, known commercially as spelter, is anything but flashy and attention-grabbing. Melting point: 787.15 degrees Fahrenheit (419.53 degrees Celsius) 7. It is used to coat other metal (galvanizing) to protect them from rusting, 90% of the zinc is used for galvanizing steel. The atomic number of zinc is 30 and it is indicated by symbol Zn. It just has to be a hard metal. The coating prevents the object treated from rusting. The average human body contains about 2.5 grams and takes in about 15 milligrams per day. The availability of suitable substitutes for a given commodity. Atomic Mass = Number of Protons+Number of Neutrons Atomic Mass = Number of Protons + Number of Neutrons Find the element Zn Zn on the periodic table. Bristolbased science writer Brian Clegg with the onomatopoeic element, zinc. Sublimation    Melting Point    Boiling Point SM95-1 (17.96439 eV) Ref. In chemistry, the formula weight is a quantity computed by multiplying the atomic weight (in atomic mass units) of each element in a chemical formula by the number of atoms of that element present in the formula, then adding all … Period Each allotrope has different physical properties. Virtually all metallic elements can be directly detected with Zinc was known to the Romans but rarely used. It provides atomic mass, mass excess, nuclear binding energy, nucleon separation energies, Q-values, and nucleon residual interaction parameters for atomic nuclei of the isotope Zn-65 (Zinc, atomic number Z = 30, mass number A = 65). Half of the distance between two unbonded atoms of the same element when the electrostatic forces are balanced. The primary ingredient of this is zinc oxide, which is white - it's small amounts of iron oxide that give it that colour. Next week, what's lurking in your basement. Zinc sulfide is used in making luminous paints, fluorescent lights and x-ray screens. All such documents and related graphics are provided "as is" without any representation or endorsement made and warranty of any kind, whether expressed or implied, including but not limited to the implied warranties of fitness for a particular purpose, non-infringement, compatibility, security and accuracy. High = substitution not possible or very difficult. It is given by the ratio of the pressure on a body to the fractional decrease in volume. Use of this web site is restricted by this site's license Even now, though, when we can avoid the need for calamine, zinc oxide plays its part. We need it to stay healthy. Atomic Mass of Zinc Atomic mass of Zinc is 65.409 u. The most common zinc ore is sphaler… The atomic mass is the mass of an atom. Atomic Absorption Determination of Zinc and Copper in a Multivitamin Carol White, Athens Technical College, Athens, GA Background Atomic absorption spectroscopy (AAS) is an important analytical technique based upon the absorption of radiation by free atoms. Zinc is quite abundant element and is ranked as the 24thmost abundant element in the Earth’s crust (around 75ppm). Half of the distance between two unbonded atoms of the same element when the electrostatic forces are balanced. World production is more than 11 million tonnes a year. Where more than one isotope exists, the value given is the abundance weighted average. Ruthenium. Members of a group typically have similar properties and electron configurations in their outer shell. Chemistry in its element is brought to you by the Royal Society of Chemistry and produced by. Say 'oxygen' or 'iodine' and there is no clue in the sound of the word to the nature of the element. Identified as an element in 1746, but known to the Greeks and Romans before 20BC.