The correct order of energy of $\sigma_{2 p}, \pi_{2 p}, \pi_{2 p}^*$ and $\sigma_{2 p}^*$ orbitals in $F_2$…

The correct order of energy of $\sigma_{2 p}, \pi_{2 p}, \pi_{2 p}^*$ and $\sigma_{2 p}^*$ orbitals in $F_2$ is
  1. $\sigma_{2 \mathrm{p}}>\pi_{2 \mathrm{p}}>\pi_{2 \mathrm{p}}^*>\sigma_{2 \mathrm{p}}^*$
  2. $\sigma_{2 \mathrm{p}} < \pi_{2 \mathrm{p}} < \pi_{2 \mathrm{p}}^* < \sigma_{2 \mathrm{p}}^*$
  3. $\pi_{2 \mathrm{p}}>\sigma_{2 \mathrm{p}}>\pi_{2 \mathrm{p}}^*>\sigma_{2 \mathrm{p}}^*$
  4. $\pi_{2 p} < \sigma_{2 p} < \pi_{2 p}^* < \sigma_{2 p}^*$

Solution

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Asked in: AP EAMCET 2018 (24 Apr Shift 2)

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