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Question

Electronic configuration of Gd(64) is written as:

A
[Xe]4f75d16s2
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B
[Xe]4f86s2
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C
[Xe]4f96s1
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D
[Xe]4f10
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Solution

The correct option is A [Xe]4f75d16s2
Gd.(64)=[Xe]4f75d1
All electrons are unpaired, hence greater stability.

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