October 2018 2 53 Report

OH- (minus na górze) ile ma protonów i elektronów (neutronów ma 8)

Ca2+ (2+ na górze) ile ma protonów i elektronów

Jaki atom lub jon ma:

1. 19 protonów, 19 elektronów i 20 neutronów

2. 17 protonów, 18 elektronów i 18 neutronów

dam naj:)


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