Question

The ionic radii F and Na are 133 and 98 pm respectively explain it

Answer 1

Explanation:

On moving down a group the ionic radius of an atom increases, as we move down a group the number of shells increase and hence, this increases the total size of the atom.

While moving across a group the ionic radii decreases. On moving across a period the effective nuclear charge increases as the number of shells increases hence the outermost electrons are more tightly held as a result the size decreases. As the sodium(Na) atom is lying left side of the periodic table and fluorine(F) is on the right side hence sodium will have more radius.