Q35 / 200 · TS EAMCET 2001 · Chemistry

Let electronegativity, ionisation energy and electron affinity be represented as EN, IP and EA respectively. Which one of the following equation is correct according to Mulliken?

  • A
    $\mathrm{EN}=\mathrm{IP} \times \mathrm{EA}$
  • B
    $\mathrm{EN}=\frac{\mathrm{IP}}{\mathrm{EA}}$
  • Correct answer
    C
    $\mathrm{EN}=\frac{\mathrm{IP}+\mathrm{EA}}{2}$
  • D
    $\mathrm{EN}=\mathrm{IP}-\mathrm{EA}$

Solution

Mulliken suggested that EN of an element is the average of its IP and EA.

Hence, the correct answer is option: 'C'.

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