# Question #aea82

Jul 27, 2017

$C a$ has a larger atomic radius than $B r$

But $B {r}^{-}$ have a larger $\textcolor{b l u e}{\text{Ionic radius}}$ not $\textcolor{red}{\text{Atomic radius}}$ than $C {a}^{2 +}$

#### Explanation:

Atomic radius is a measure of the size of an element or atoms of an element..

It increases down the group and decreases across the period..

Jul 27, 2017

$C a$ in the first case, $B {r}^{-}$ in the second case.