Question

The elements with atomic numbers $101$ and $104$ belong to, respectively :

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> JEE MAIN - 2020

Answer 1

$Z=101has[Rn{]}^{86}7s^{2}5f^{13}-\text{actinoids}$

$Z=104has[Rn{]}^{86}7s^{2}5f^{14}6d^2-4^{th}\text{group elements}$

The answer is Actinoids & $4^{th}$ group.
A is the correct option.