Nitrogen and oxygen exist as diatomic but their congeners are `P_(4)` and `S_(8)` respectively because `:`A. phosphorus and sulphur are solids.B. phosphorus and sulphur catenate due to the existance of `d-` orbitals and from strainless structures.C. phosphorus and sulphur polymerise as soon as they are formedD. catenation tendency of P and S is stronger because of the high `P-P` and `S-S` bond energies as compared to `N-N` and `O-O` bond energies

Nitrogen and oxygen exist as diatomic but their congeners are `P_(4)`

1.	Nitrogen and oxygen exist as diatomic but their congeners are `P_(4)` and `S_(8)` respectively because `:`A. phosphorus and sulphur are solids.B. phosphorus and sulphur catenate due to the existance of `d-` orbitals and from strainless structures.C. phosphorus and sulphur polymerise as soon as they are formedD. catenation tendency of P and S is stronger because of the high `P-P` and `S-S` bond energies as compared to `N-N` and `O-O` bond energies
Answer» Correct Answer - 4 N and O have ability to form `p pi - p pi` multiple obnds with it self on account of smaller size of atoms. `N-N` and `O-O` bond energies are less on account of repulsion between non`-` bonded pairs of electrons due to smaller size of atoms. `S-S` bond energy `(265 kJ mol^(-1))` is next to `C-C`.

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