Question

please answer these questions
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Answer 1

Answer:

electronic configuration k =2,8,8,1

valence electron of ca=2

no of shells =1

Answer 2

Answer:

1) K- 2,L-8,M-8,N-1

2) 2 valence electrons

3) 3 shells

4)Sr, Ca,Mg,Be

5)metal

6)Mg