An elements have successive ionization enthalpies as 940 (first), 2080, 3090, 4140, 7040, 7870, 16000 and 19500 kJ `mol^(-1)`. To which group of the periodic table does this element belong?

Options

A. 14
B. 15
C. 16
D. 17

Answer

C

Explanation

`ubrace(underset(940)(IE_(1)) underset(2080)(IE_(II))underset(3090)(IE_(III))underset(4140)(IE_(IV))underset(7030)(IE_(V))underset(7870)(IE_(VI)))" "ubrace(underset(16000)(IE_(VII))underset(9500)(IE_(VIII)))`

so valence electron is 6 thus it belongs to gr. 16