Question

(a) Define the term ‘ionisation potential’

(b) Represent in the form of an equation. In which unit it is measured?

Answer 1

(a) The energy required to remove an electron from a neutral isolated gaseous atom and convert it into a positively charged gaseous ion is called Ionization energy or ionization potential.

(b) M (g)+ I.E M+(g) + e-

M can be any element

It is measured in electron volts per atom. Its S.I unit kJmol-1.