Question

Electronegativity of $F$ on Pauling's scale is 4.0. The value on Mulliken's scale is:

• A. $11.2$
• B. $14.4$
• C. $16.8$
• D. None of these

Answer 1

The correct option is A $11.2$

Mulliken proposed that the arithmetic mean of the first ionization energy (I) and the electron affinity (Eea) should be a measure of the tendency of an atom to attract electrons.
$X=\frac{E_i+E_{Ea}}{2}$
Electronegativity of $F$ on Mulliken's scale is hence $11.2$