Question

The five successive ionisation energies of an
element 'X' are 800, 1427. 1858,4500 and
5024 KJ mole- respectively. The valency of 'X'
is​

Answer 1

Explanation:

Please give me a brain mark

Answer 2

Answer:

3

Explanation:

A high jump in the ionisation energy indicates that the element had achieved a noble gas configuration in ionised form.

Here, this change can be observed between third and forth ionisation energies.

This indicates that after ionising 3 times the ion of element X had achieved inert configuration.

Hence, valency of X is 3.