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Question
Arrange the following hydrides in their increasing acid strength [CH4, H2S, PH3 and SiH4] -
Options:
A .  H2S
B .  CH4
C .  SiH4
D .  CH4
Answer: Option B
:
B
As we go left to right in a period, as the non-metallic character increases and the acidic character of hydrides increases.

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