The electronic configuration which is associated with highest first ionisation enthalpy is:

The electronic configuration which is associated with highest first ionisation enthalpy is:
  1. $[\mathrm{Ne}] 3 \mathrm{~s}^2 3 \mathrm{p}^2$
  2. $[\mathrm{Ne}] 3 \mathrm{~s}^2 3 \mathrm{p}^3$
  3. $[\mathrm{Ne}] 3 \mathrm{~s}^2 3 \mathrm{p}^4$
  4. $[\mathrm{Ne}] 3 \mathrm{~s}^2 3 \mathrm{p}^1$

Solution

Half-filled or completely filled orbitals attain extra stability due to symmetrical distribution of electrons and high exchange energy.

Asked in: JEE-TOPICTESTS-CHEMISTRY

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