Which among CH_(4),SiH_(4),GeH_(4) and SnH_(4) is the most volatile ?

1.	Which among CH_(4),SiH_(4),GeH_(4) and SnH_(4) is the most volatile ?
Answer» `CH_(4)` `SiH_(4)` `GeH_(4)` `SnH_(4)` ANSWER :A

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