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  4. Phosphorus cannot form PH5 with its outer electronic configuration as 3s23p3 because

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Q. Phosphorus cannot form $PH_5$ with its outer electronic configuration as $3s^23p^3$ because

NEETNEET 2022Hydrogen

Solution:

Since higher oxidation state of $P$ is not favoured by high $\Delta_aH$ of dihydrogen and $\Delta_{eg}H$ of hydrogen, $P$ does not form $PH_5$ though it exhibits $+3$ and $+5$ oxidation states.