Chemistry - CHEMICAL BONDING Question with Solution | TestHub
The figure is one Lewis contributor of peroxynitric acid HO–O–N(=O)–O, with formal charges N⁺ and terminal O⁻. The terminal nonperoxy oxygen positions are related by resonance. The marked angles are α=Oₜ–N–Oₜ and β=Oₜ–N–Oₚ, where Oₚ belongs to the peroxide chain. Which combined conclusion is correct in the elementary Lewis/VSEPR model?
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Answer:
Solution:
The N centre has three σ directions and a delocalised π contribution involving the two terminal nonperoxy oxygens. It has no lone pair in these octet contributors. The peroxide-chain N–O bond has a distinct environment, so its length need not equal the terminal pair; no symmetry forces α=β. There is one O–H group, giving monoprotic acid-base counting. Resonance moves electrons, not nuclei or the O–O connectivity. These linked structural, resonance and acid-base checks select B.
