Talk:Atomic mass

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Stylized lithium-7 atom?

The picture of the Stylized lithium-7 atom has (3) electrons each at equal distance orbit from the nucleus, which seems misleading. Is there a case in real life where you could force all (3) electrons in lithium-7 to have equal energy and be stable in a single electron shell? Even in the bohr model, you'd expect (2) shells, not a single shell. A picture of a Quantum model of lithium-7 I think would be better. Or at least a picture showing (2) electron shells... Goslackware (talk) 17:27, 4 October 2023 (UTC)[reply]

Is there a case in real life where you could force all (3) electrons in lithium-7 to have equal energy and be stable in a single electron shell?

The Pauli exclusion principle says definitely no. However the electronic structure of the atom is not relevant to this particular article, and a more accurate diagram might get in the way of the intended meaning. FChlo (talk) 01:27, 16 January 2024 (UTC)[reply]

Explain jargon: numbers in parenthesis

I noticed numbers in parenthesis, for example "1.007825031898(14)". What does that (14) part mean? It's not a common way to write numbers, so it should be explained. Mateussf (talk) 12:39, 19 June 2024 (UTC)[reply]

Chemistry

Atomic weight of an element is not always a whole number why is that 2400:1A00:BC10:6DB0:50CD:5124:F105:66C3 (talk) 14:30, 22 July 2024 (UTC)[reply]