Question #b8ac0

1 Answer
Aug 29, 2016

Here the total number of ionization energy values of element X is #color(red)(4)#

So the total number of electrons in X atom should be 4 and the electronic configuration will be #1s^2 2s^2#

Hence the number of valance electron in the atom is #color(red)(2)#

The question is not clear enough and data given here is not realistic.e.g IE1>>>than IE2 etc.

I assumed that only 4 ionisation energy values of the atom are possible.

Another view of the same question given in the site.