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Can phosphorus with outer electronic con...

Can phosphorus with outer electronic configuration `3S^2 4p^3` form `PH_5` ?

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Although phosphorus exhibits +3 and +5 oxidation states, it cannot form `PH_5`. Besides some other considerations, high `Delta_aH` value of dihydrogen and `Delta_eg`H value of hydrogen do not favour to favour to exhibit the highest oxidation state of P, and consequently the formation of `PH_5`.
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PATHFINDER-S-BLOCK ELEMENTS AND THEIR COMPOUNDS, HYDROGEN AND ITS COMPOUNDS-QUESTION BANK
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