The $I{P}_1,I{P}_2,I{P}_3,I{P}_4$  and  of an element are 7.1, 14.3, 34.5, 46.8, 162.2 eV respectively. The element is likely to be

The jump in IP values exist in ${\text{IP}}_5$ and thus removal of fifth electron occurs from inner shell. Thus element contains four electrons in its valence shell. It means the element belongs to the group 14.