Which from following elements has completely filled 4 f orbital at expected ground state configuration?

Question

Aicharya · Accepted Answer

$\begin{aligned} & \mathrm{Yb}=[\mathrm{Xe}] 4 \mathrm{f}^{14} 6 \mathrm{~s}^2 \ & \mathrm{Eu}=[\mathrm{Xe}] 4 \mathrm{f}^7 6 \mathrm{~s}^2 \ & \mathrm{Cd}=[\mathrm{Kr}] 4 \mathrm{~d}^{10} 5 \mathrm{~s}^2 \ & \mathrm{~W}=[\mathrm{Xe}] 4 \mathrm{I}^{14} 5 \mathrm{~d}^4 6 \mathrm{~s}^2\end{aligned}$

Which from following elements has completely filled 4 f orbital at expected ground state configuration?

Solution