The first four I.E. values of an element are 284, 412, 656 and 3210 kJ `mol^(-1)`.
Channel: Doubtnut
Date: 2020-05-24

The first four I.E. values of an element are 284, 412, 656 and 3210 kJ `mol^(-1)`. The number of valence electrons in the element are: