Q.

Which of the following is most volatile?

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a

CH4

b

SiH4

c

GeH4

d

SnH4

answer is A.

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Detailed Solution

As the size of hydride increases surface area increases Inter molecular force of attraction (or) Vander waal's forces of attractions increasesTherefore melting and boliing points increases means, volatality decreasesNOTE : Volatality is a measure of vaporisation
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