White phosphorous catches fire in air to produce dense white fumes. This is due to the formation of

P_{4} O_{10}

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P H_{3}

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H_{3} P O_{3}

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H_{3} P O_{2}

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Solution

The correct option is B $P_{4} O_{10}$
$P_{4} + 5 O_{2} \to P_{4} O_{10}$
White phosphorus is less stable and more reactive than other solid phases of phosphorus because of angular strain in $P_{4}$ molecule where the angles are only $60^{0}$ .Therefore it readily catches fire to give dense white fumes of $P_{4} O_{10}$ .

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White phosphorous catches fire in air to produce dense white fumes. This is due to the formation of

The correct option is B P4O10P4+5O2→P4O10White phosphorus is less stable and more reactive than other solid phases of phosphorus because of angular strain in P4 molecule where the angles are only 600.Therefore it readily catches fire to give dense white fumes of P4O10.