If the ionization and electron gain enthalpy of an element is $275$ and $86$ Kcal mol $^{- 1}$ respectively, then the electronegativity of the element on the Mulliken scale is:

2.8

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2.6

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3.16

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4.16

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Solution

The correct option is C $3.16$
On Mulliken scale, electronegativity is calculated as:
$X_{M u l l i k e n} = (1.97 \times 10^{- 3}) (E_{i} + E_{E A}) + 0.19$
$X = (1.97 \times 10^{- 3}) \times (1150.6 + 359.8) + 0.19$
$X = 2.97 + 0.19$
$X = 3.16$
Hence, the correct option is $C$

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If the ionization and electron gain enthalpy of an element is 275 and 86 Kcal mol−1 respectively, then the electronegativity of the element on the Mulliken scale is:

The correct option is C 3.16On Mulliken scale, electronegativity is calculated as:XMulliken=(1.97×10−3)(Ei+EEA)+0.19X=(1.97×10−3)×(1150.6+359.8)+0.19X=2.97+0.19X=3.16Hence, the correct option is C

If the ionization and electron gain enthalpy of an element is $275$ and $86$ Kcal mol $^{- 1}$ respectively, then the electronegativity of the element on the Mulliken scale is:

The correct option is C $3.16$
On Mulliken scale, electronegativity is calculated as:
$X_{M u l l i k e n} = (1.97 \times 10^{- 3}) (E_{i} + E_{E A}) + 0.19$
$X = (1.97 \times 10^{- 3}) \times (1150.6 + 359.8) + 0.19$
$X = 2.97 + 0.19$
$X = 3.16$
Hence, the correct option is $C$