Question

The outer electronic configuration of Gd (Atomic No.: $64$) is

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

Answer 1

The correct option is D $4f^{7}5d^{1}6s^2$

Atomic Number of Gd is 64.
The electronic configuration of $Gd$ is $\left[Xe\right]4f^{7}5d^{1}6s^2$.