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Scales of Electronegativity

An element X ...

Question

An element X has IE and EA respectively $275$ and $1450 k J {m o l e}^{- 1}$ . The electronegativity of element according to Mullikan scale is ?

A

2.4

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B

2.8

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C

3.2

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D

4

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Solution

The correct option is B 3.2
The electronegativity according to the Mullikan's scale is given by the formula,
Electronegativity= $\frac{I E + E A}{540}$
$= \frac{275 + 1450}{540}$
$= 3.194$

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