Question

The number of $f$-electrons in $H{o}^{2+}$ ion is_____ . [At. no. of $Ho=67$ ]

Answer 1

Answer: 11

Electronic configuration of $Ho$ is:
$[Xe]4f^{11}6s^2.$
$\therefore H{o}^{2+}$ ion $\Rightarrow [Xe]4f^{11}$
$\therefore$ No. of f-electrons$=11$