An ion M 3- contain 10 …
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Yogita Ingle 5 years, 1 month ago
M3- that means it has gain 3 electrons
Now M3- have 10 electrons
So M have 10 - 3=7 electrons
Atomic no = no of protons = original no of electrons
So atomic no is 7 which is nitrogen
Atomic mass = no of ( protons + neutrons)
7+7 =14u
Therefore.....
Atomic no. = 7
Atomic mass = 14u
Element = Nitrogen
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