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plz tell me how electronic configuration done for the attached element pic of He.

plz tell me how electronic configuration done for the attached element pic of He.

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Grade:12th pass

1 Answers

Umakant biswal
5349 Points
7 years ago
@ r khan 
option no b turns out to be the correct option here , its beacuse half filled orbitals are lower energy than full ones . here , the 4f ^7 is half full 
HOPE IT CLEARS 
ALL THE BEST 

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