Question

Which of the following relation is correct?
$\text{(IE = Ionisation energy in eV/atom, EA = Electron affinity in eV/atom, EN = Electronegativity in Mulliken scale)}$

• A. $\text{2IE - EA - EN = 0}$
• B. $\text{2EN - IE - EA = 0}$
• C. $\text{2EA - IE - EN = 0}$
• D. $\text{EN - IE - EA = 0}$

Answer 1

The correct option is B $\text{2EN - IE - EA = 0}$

On Mulliken's scale:
$\text{EN}=\frac{\text{IE + EA}}{2}$
$\Rightarrow \text{2EN - IE - EA=0}$
Hence, the correct option is (b).