Verified Solution • 2025–26 Session moderate

QJEEM11Ch804a: JEE Main 2011 Chemistry - Class 12 JEEM11Ch804a Solution: The outer electron configuration of (Atomic No. ) is :

The outer electron configuration of

Gd

(Atomic No.

64

) is :

Multiple Choice Options

A $4{f^3}\,5{d^5}\,6{s^2}$
B $4{f^8}\,5{d^0}\,6{s^2}$
C $4{f^4}\,5{d^4}\,6{s^2}$
D $4{f^7}\,5{d^1}\,6{s^2}$

Step-by-Step Verified Solution

The configuration of

Gd

is

4{f^7}\,5{d^1}\,6{s^2}.

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