Question

The outer shell electronic configuration of $Gd(Z=64)$ is

• A. $4f^{7}5d^{1}6s^2$
• B. $4f^{8}6s^2$
• C. $4f^{9}6s^1$
• D. $4f^{7}5d^{2}6s^1$

Answer 1

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

The outer shell electronic configuration of $Gd(Z=64)$ is $4f^{7}5d^{1}6s^2$.