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The ionisation energy and electron affin...

The ionisation energy and electron affinity of an element are 13.0 eV and 3.8 eV respectively. Its electronegativity on the Pauling scale is

A

3

B

3.5

C

4

D

2.8

Text Solution

Verified by Experts

The correct Answer is:
A
Electronegativity on the Mulliken.s scale
`= 1//2(13.0+3.8)= 8.4`
Since Mulliken.s values are nearly 2.8 times as large as Pauling values, therefore, electronegativity of the element on the more commonly used Pauling scale is `8.4//2.8= 3.0`
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