Explain i. Oxides of nitrogen have open chain structures while those of phosphorus have closed chain or cage structure. Why is it so? IIustrate with one structural example for each type of oxides or The oxides of phosphorus have cage strućtures but not open ones. ii. Elemental phosphorus does not exist as `P_2` as `N_2`

Explanation

i. N, has a strong .tendency to form .p pi-p. .pi. multiple borids because of itsstmall size and high electronegativity. Hence .N. fórms niultiple bonds withoxygen ahd hence the. oxides of .N. have open chain structures. P because of its large size.and lower electronegativity does not form p .pi-p pi. "múltiple bonds with oxygen atoms"but forms single bonds..Hence oxides of .P. have cage like or closed chain structures.
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ii. .N. lias a strong.tendency to form multiple bonds due to its small. size and higher electronegativity. Hence it exists as .N equiv NN_2.. buf .P., due to . ^prime. its
.tau. large size and lower electronegativity does not show any tendency tơ form multiple bonds. It exists as tetra atomic .P_4. moleculè in which .p-p.. covalent bonds exist and .P. atom lie at the corners of a regular.tetrahédron.
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