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(A) According to the Mulliken scale,the electronegativity $(\chi)$ of an element is given by the average of its ionization potential $(IP)$ and electr

Vedclass · Accepted Answer

$8.5$

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(A) According to the Mulliken scale,the electronegativity $(\chi)$ of an element is given by the average of its ionization potential $(IP)$ and electron gain enthalpy $(EA)$: $\chi = \frac{IP + EA}{2}$ Given $IP = 13 \ eV$ and $EA = 4 \ eV$. Substituting the values: $\chi = \frac{13 + 4}{2} = \frac{17}{2} = 8.5 \ eV$. Note: The formula $\chi = \frac{IP + EA}{5.6}$ is used to convert Mulliken electronegativity to the Pauling scale. Since the question asks for the value on the Mulliken scale,the correct calculation is $\frac{IP + EA}{2} = 8.5 \ eV$.

Given that the ionization potential and electron gain enthalpy of chlorine are $13 \ eV$ and $4 \ eV$ respectively. The electronegativity of chlorine on the Mulliken scale is approximately equal to: (in $eV$)

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