Electronegativity of chlorine is three. Electron affinity of chlorine is 3.6 ev/atom. Ionization potential of chlorine is __ev/atom.

E.N of chlorine =3

E.A of chlorine = 3.6 ev/atom

I.P of chlorine=?

X =$\frac{\mathrm{I}.\mathrm{P} +\mathrm{E}.\mathrm{A}}{2}$(X=Electro negativity)

3 =$\frac{\mathrm{I}.\mathrm{P} +3.6}{2}$

I.P = 6 - 3.6

Ionization potential of chlorine is = 2.4 ev/atom.