Question

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

• A. Actinoids and Group $4$
• B. Group $11$ and Group $4$
• C. Group $6$ and Actinoids
• D. Actinoids and Group $6$

Answer 1

The correct option is A Actinoids and Group $4$

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

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

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