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The ionisation potential and electron af...

The ionisation potential and electron affinity of an element "X" are 275 and 86 kcal/mole. Then the electronegativity of "X" according to Mulliken scale is

A

2.8

B

0

C

4

D

2.6

Text Solution

Verified by Experts

The correct Answer is:
A
I.E.+E.A.`=275+86=361` kcal `mol^(-1)`
`=361xx4.184=1510.42kJ" "mol^(-1)`
`therefore`Electronegativity`=(1510.42)/(540)=2.797=2.8`
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