Question

The successive 5 ionisation energies of an element are 800, 2427, 3658, 25024 and 32824 kJ/mol, respectively. By using the above values predict the group in which the above element is present :

(1) Group 2

(2) Group 13

(3) Group 4

(4) Group 14

Answer 1

Correct option is : (2) Group 13

The \(IE_4\) is suddenly very high therefore element must have 3 valence \(e^-{(s)}\) and it belong to group 13