Q58 · CSIR-NET Chemistry, June 2011

Paper: CSIR-NET June 2011 · Subject: Inorganic Chemistry · Chapter: Chemical Bonding · Topic: Chemical Bonding – General · Marks: 2 · Difficulty: Easy

The highest occupied MO in $\mathrm{N}_{2}$ and $\mathrm{O}_{2}^{+}$respectively are (take x -axis as internuclear axis)
(a)$\sigma_{2 \mathrm{px}}, \pi_{2 \mathrm{py}}^{*}$
(b)$\pi_{2 \mathrm{py}}, \pi_{2 \mathrm{pz}}$
(c)$\sigma_{2 \mathrm{py}}^{*}, \sigma_{2 \mathrm{px}}$
(d)$\pi_{2 \mathrm{py}}^{*}, \pi_{2 \mathrm{pz}}^{*}$
Answer
Answer: A ✓ checked by 4AB · confidence high
Explanation
HOMO of N₂: σ2pₓ; of O₂⁺: π*2p (a).

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