42) How many different principal quantum numbers can be found in the ground-state electron configuration of...

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Answer 1

Answer #1

Ni(28) ground state configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d8

so there are 4 different principal quantum number 1 s 2 s p 3 s p d 4 s

Answer 2

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