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Question

The increasing order of boiling point of hydrides of group 15 elements is

A

$${ PH }_{ 3 }<{ AsH }_{ 3 }<{ NH }_{ 3 }<{ SbH }_{ 3 }$$

B

$${ PH }_{ 3 }<{ AsH }_{ 3 }<{ SbH }_{ 3 }<{ NH }_{ 3 }$$

C

$${ NH }_{ 3 }<{ PH }_{ 3 }<{ AsH }_{ 3 }<{ SbH }_{ 3 }$$

D

$${ AsH }_{ 3 }<{ PH }_{ 3 }<{ NH }_{ 3 }<{ SbH }_{ 3 }$$

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Solution

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Correct option is A. $${ PH }_{ 3 }<{ AsH }_{ 3 }<{ NH }_{ 3 }<{ SbH }_{ 3 }$$

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