All Isotopes articles
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NewsScientists discover the heaviest oxygen isotope
Help learners delve into atomic structure and isotopes with this research context
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NewsHigh pressure forces heavy hydrogen to act like a metal
Explore metallic bonding and isotopes with this latest research looking at metallic hydrogen
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FeatureMeteorite chemistry
What is a meteorite made of? Studying the composition of meteors allows scientists to look back billions of years to before the birth of the solar system
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FeatureWhy you need A-level chemistry to study geology
Knowledge of chemistry topics such as isotopes, analytical techniques and earth science is essential for studying geology
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FeatureFreeing the world from chemical weapons
Chemists have helped destroy 97% of declared banned substances, finds Andy Extance, and are pushing to get the rest
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ResourceThe chemistry of chemical weapons
In this activity you will look at the chemistry behind a number of chemical weapons that have been employed throughout history
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MathsSummation and the sigma notation
Paul Yates applies this handy shorthand to chemistry calculations in mass and enthalpy
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FeatureModern-day alchemists
Sam Tracey visits Lawrence Berkeley National Laboratory to find out how to make a new element
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ResourceBuild an atom simulation
Build an atom from scratch, using protons, neutrons, and electrons. Test different combinations to produce ions and unstable elements. Video: How to use the PhET build an atom simulation
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ResourceOn This Day - Apr 01 : Ferdinand Brickwedde died
He co-discovered deuterium (2H), which is an isotope or “heavy form” of hydrogen, with Harold Urey and George Murphy. They produced the first measurable samples of deuterium from liquefied hydrogen.
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ResourceOn This Day - Apr 29 : Harold Urey was born
Urey co-discovered deuterium (²H) with Ferdinand Brickwedde and George Murphy. They produced the first measurable samples of the isotope from liquefied hydrogen.
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ResourceOn This Day - Jan 05 : Harold Clayton Urey died
He was awarded the 1934 Nobel Prize in Chemistry for the discovery of deuterium in heavy water. Deuterium (2H) is an isotope of hydrogen that contains an extra neutron.
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ResourceOn This Day - Feb 18 : Introduction of isotope
British chemist Frederick Soddy coined the term isotope (from the Greek, meaning ‘in the same place’) to describe different elements that can be chemically indistinguishable but have different atomic weights and characteristics.
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NewsPeriodic table of the isotopes launched by IUPAC
IUPAC has launched a new periodic table which emphasises isotopic composition