Second ionization energy of an element is higher than its first ionization energy . Why ?

Explanation

The energy required to remove first electron from the outermost orbit or shell of a neutral gaseous atom is called first ionization energy `(IE _(1))`
The energy required to remove an electron from uni-positive ion is called the `2^(nd) ` ionization energy `(E _(2))`.
The second ionization energy `(IE _(2))` is greater than the first ionization energy `(IE _(1 ))` . On removing an electron from an atom . the uni - postitive ion formed will have more effective nuclear charge than the neutral atom . This decreases the repulsion between the electrons and at the sametime increases teh nuclear attraction on the electron in the outer shells . As a result , more energy is required to remove an electron from the uni - positive ion . Hence the second ionization energy is greater than the first ionization energy .