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JEE Advanced levelOne or more correct optionsDifficulty 3 of 3pn109

Select the correct statement(s) about the oxides of phosphorus.

A $P X_{4} O X_{10}$ is the anhydride of orthophosphoric acid
B $P X_{4} O X_{6}$ gives $H X_{3} PO X_{3}$ with excess cold water
CIn $P X_{4} O X_{6}$ phosphorus is in the +3 state
D $P X_{4} O X_{10}$ contains P-P bonds

Answer: A, B, C

P X_{4} O X_{10} + 6 H X_{2} O 4 H X_{3} PO X_{4}

and

P X_{4} O X_{6} + 6 H X_{2} O 4 H X_{3} PO X_{3}

. In

P X_{4} O X_{6}

,

4 x + 6 (- 2) = 0

gives

x = + 3

. Both oxides are cage structures built from P-O-P bridges with no P-P bonds, so D is false.

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