the electronic configuration of a dipositive


The electronic configuration of a dipositive metal M2+  is 2, 8, 14 and its atomic weight is 56 a.m.u. The number of neutrons in its nuclei would be:

(1) 30     

(2)32     

(3) 34    

(4) 42

Ans: 30

 

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Chemistry: the electronic configuration of a dipositive
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