Question

The number of 'f' electrons in the ground state electronic configuration of $Np(Z=93)$ is __________.

• A. 4.00
• B. 4
• C. 4.0

Answer 1

Answer: (A), (B), (C)

The electronic configuration of neptunium in ground state is $\left[Rn\right]5f^{4}6d^{1}7s^2$

$\therefore$ It has $4$ electrons in the $f$ subshell of the anti penultimate shell.