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Enthalpy

Which of the ...

Question

Which of the following hydrides has the lowest melting point :

N H_{3}

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P H_{3}

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A s H_{3}

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S b H_{3}

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Solution

The correct option is B $P H_{3}$
Boiling point / Melting point increases with increase in size due to increase in Van der Waal's forces. Boiling point / Melting point of $N H_{3}$ is more because of hydrogen bonding.
$∴ P H_{3}$ has lowest melting point.

Suggest Corrections

Similar questions

1. S b H_{3} > N H_{3} > A s H_{3} > P H_{3}

2. N H_{3} > P H_{3} > A s H_{3} > S b H_{3}

3. N H_{3} > P H_{3} > A s H_{3} > S b H_{3}

4. N H_{3} > P H_{3} > A s H_{3} > S b H_{3}

S i F_{4} < S i C l_{4} < S i B r_{4} < S i I_{4}

N H_{3} > S b H_{3} > A s H_{3} > P H_{3}

N H_{3} > S b H_{3} > A s H_{3} > P H_{3}

N H_{3} > S b H_{3} > A s H_{3} > P H_{3}

1. S b H_{3} > N H_{3} > A s H_{3} > P H_{3}

2. N H_{3} > P H_{3} > A s H_{3} > S b H_{3}

3. N H_{3} > P H_{3} > A s H_{3} > S b H_{3}

4. N H_{3} > P H_{3} > A s H_{3} > S b H_{3}

Out of NH₃, PH₃, AsH₃ and SbH₃ the most basic hydride is:

N H_{3}

P H_{3}

A s H_{3}

S b H_{3}

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