Which of the following hydrides is least stable hydride is:

C H_{4}

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S i H_{4}

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S n H_{4}

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P b H_{4}

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Solution

The correct option is B $P b H_{4}$
The hydrides of group 14 elements, that are of the form $M H_{4}$ . These are less stable due to the mismatch of the size of big group 14 elements and very small H element. Among those, methane i.e. $C H_{4}$ is the versatile and silane, germane, stannane are known but plumbane i.e. $P b H_{4}$ is very unstable.

Thus the correct option is D.

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Similar questions

[C H_{4}, H_{2} S, P H_{3} a n d S i H_{4}]

Which of the following hydride is least stable?

S i H_{4}, G e H_{4}, S n H_{4}, C H_{4}

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