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Question

The Zeff (approx.) for 4s-electron of Ni-atom according to Slater's rule is ________.

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Solution

The configuration of Ni-atom is 1s22s22p63s23p64s23d8.

Hence the Zeff for 4s electron =ZS

where, Z is the number of protons in the nucleus, and S is the shielding constant.

Zeff=28(0.35×1+0.85×16+1×10)

=2823.95

=4.05

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