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Carbon-12 (12 C) is the most abundant of the two stable isotopes of carbon (carbon-13 being the other), amounting to 98.93% of element carbon on Earth; [1] its abundance is due to the triple-alpha process by which it is created in stars.
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Carbon (6 C) has 14 known isotopes, from 8 C to 20 C as well as 22 C, of which 12 C and 13 C are stable.The longest-lived radioisotope is 14 C, with a half-life of 5.70(3) × 10 3 years. . This is also the only carbon radioisotope found in nature, as trace quantities are formed cosmogenically by the reactio
The Chemistry of the Actinide and Transactinide Elements (3rd ed.). Dordrecht, The Netherlands: Springer Science+Business Media. p. 1722. ISBN 1-4020-3555-1. This book contains predicted electron configurations for the elements up to 172, as well as 184, based on relativistic Dirac–Fock calculations by B. Fricke in Fricke, B. (1975). Dunitz ...
See {{Element-symbol-to-oxidation-state-data/doc}} for an overview. This list pulls data from {{Element-symbol-to-oxidation-state-data}} for each element then formats the result with {{Element-symbol-to-oxidation-state-row}}
The isotope carbon-12 (12 C) forms 98.93% of the carbon on Earth, while carbon-13 (13 C) forms the remaining 1.07%. [69] The concentration of 12 C is further increased in biological materials because biochemical reactions discriminate against 13 C. [ 70 ] In 1961, the International Union of Pure and Applied Chemistry (IUPAC) adopted the isotope ...
12 bismuth-191: 12.3 darmstadtium-281: 12.7 radium-212: 13.0 radium-211: 13 lawrencium-254: 13 einsteinium-242: 13.5 oxygen-20: 13.51 beryllium-11: 13.81 darmstadtium-281: 14 francium-207: 14.8 lead-218: 15 lead-187: 15.2 francium-206m1: 15.9 francium-206: 16 hassium-269: 16 seaborgium-265m: 16.2 bohrium-267: 17 roentgenium-281: 17 neon-19: 17 ...
A mnemonic is a memory aid used to improve long-term memory and make the process of consolidation easier. Many chemistry aspects, rules, names of compounds, sequences of elements, their reactivity, etc., can be easily and efficiently memorized with the help of mnemonics.