Chemistry
Chemistry, 12.02.2021 05:20, katherineweightman

1.9/4 Be+42HeβŽ―β†’ ? +10n
2. 22/11 NA + ? β€” 22/10 NE

answer
Answers: 2

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1.9/4 Be+42HeβŽ―β†’ ? +10n
2. 22/11 NA + ? β€” 22/10 NE...

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