Question

Please answer the top most question

Answer 1

GROUP NUMBER :-

A- 1

B- 13

C- 15

D- 17

E.C. of ;

B- 2,8,3

D-2,8,7

Compound Formed :-

B(D)3.

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Answer 2

Group no.:-

A-1

B-13

C-15

D-17

ELECTRONIC CONFIGURATION:-

B:- [nearest noble gas config] + 3

D:- [nearest noble gas config] + 5

Compound:- BD3