Q. If the ionisation potential is $I P$ , electron affinity is $E A$ and electronegativity is $X$ , which of the following relation is correct?

2273 215 Classification of Elements and Periodicity in Properties Report Error

A

$2 X - E A - I P = 0$

57%

B

$2 E A - X - I P = 0$

13%

C

$2 I P - X - E A = 0$

20%

D

All of these

9%

Solution:

$X = \frac{I P + E A}{2}$
$2 X - I P - E A = 0$