The bond length in $Cl_2$ is $198 \ pm$. Calculate the atomic radius of chlorine. (in $pm$)

How would you explain the lower atomic radius of $Ga$ as compared to $Al$?

The increasing order of atomic radii of the following Group $13$ elements is:

Which of the following is arranged in decreasing order of size?

Explain why cations are smaller and anions larger in radii than their parent atoms?

$A, B, C, D$ and $E$ are elements with atomic numbers $13, 11, 9, 7$ and $16$ respectively. Among these elements,the ion of an element $X$ has the largest size and the ion of an element $Y$ has the smallest size. $X$ and $Y$ are respectively (Assume that all ions have the nearest inert gas configuration).