PH3 has lowerboiling point than NH3. Why? from Chemistry The
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    The p-Block Elements

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    409. PH3 has lowerboiling point than NH3. Why?

    This is due to the fact that NH3 has hydrogen bonding which increase the bond strenth and thus increase the boiling point.While in case of PH3 no hydrogen bonding is possible.
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    410. Write the reaction of thermal decomposition of sodium azide.
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