NEET 2016 Physics and Chemistry Paper 1

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Question : 78 of 90

Marks: +1, -0

The electronic configurations of Eu (Atomic No. 63) Gd (Atomic No. 64) and Tb (Atomic No. 65) are :

[NEET 2016 P1]

[Xe]4f76s2,[Xe]4f75d16s2 and [Xe]4f96s2
[Xe]4f76s2,[Xe]4f86s2 and [Xe]4f85d16s2
[Xe]4f65d16s2,[Xe]4f75d16s2 and [Xe]4f95d16s2
[Xe]4f65d16s2,[Xe]4f75d16s2 and [Xe]4f85d16s2

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