Question

The element with atomic number $114$ belongs to

• A. group 14 and period 5
• B. group 14 and period 7
• C. group 13 and period 3
• D. group 12 and period 7

Answer 1

Answer: (B)

The outermost electronic configuration of element
${(}_{114}Z)$ is $[Rn]5f^{14}6d^{10}7s^{2}7p^2$
It has $n=7$ so period $7$
It belongs to $p$-block, so group number
$=10+4=14$
i.e., group $14$ and period $7$.