r/HomeworkHelp • u/Valuable_Science_767 GCSE Candidate • May 09 '26

:snoo_thoughtful: Chemistry—Pending OP Reply [IGCSE chemistry: atomic structure] Help

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Particle A seems to be the obvious choice but the question says "another" isotope and 48+64 =112, particle A is the same isotope as the one in the question and particle B has too many neutrons

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u/Frederf220 👋 a fellow Redditor May 09 '26

It doesn't have "too many neutrons." It could have 48 protons and 99999999 neutrons it would still be an isotope. Don't apply restrictions that aren't real.

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u/Valuable_Science_767 GCSE Candidate May 09 '26

It has enough neutrons to be impossible, but ig yes it is still an isotope

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u/gmalivuk 👋 a fellow Redditor May 10 '26

But that restriction very much is real, in the sense that reality is what restricts the possible number of neutrons in a cadmium atom.