How many species out of the following have reducing properties?
$N H_{3}, P H_{3}, H_{3} P O_{2}, H_{3} P O_{3}, H_{3} P O_{4}, L i A l H_{4}, B H_{3}$ .

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Solution

Out of the seven species, all six species (except orthophosphoric acid, i.e., $H_{3} P O_{4}$ ) shows reducing properties. $H_{3} P O_{4}$ can act as oxidising agent only since it is in its highest oxidation state in central $P$ atom.

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Similar questions

H_{3} P O_{2}, H_{3} P O_{4}, H_{3} P O_{3}

H_{4} P_{2} O_{6}

1

H_{3} P O_{4}, H_{3} P O_{3}, H_{3} P O_{2}, H_{3} B O_{3}

H_{3} P O_{4}, H_{3} P O_{3}

H_{3} P O_{2}

3 H_{3} P O_{2} \to {P H}_{3} + 2 H_{3} P O_{3}

{P H}_{3}

6

H_{3} P O_{2}

= 31

= 1

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