JAMB - Chemistry (2018 - No. 71)
The ionic radii of metals are usually
greater than their atomic radii
unaffected by the charge on the ion
the same as their atomic radii
less than their atomic radii
Paliwanag
In a neutral atom, the atomic and ionic radius is the same, but many elements exist as anions or cations. If the atom loses its outermost electron (positively charged or cation), the ionic radius is smaller than the atomic radius because the atom loses an electron energy shell.
Yes ionic radius is only less than atomic radius for a metal.