Arrange the following hydrides in their increasing acid strength $[C H_{4}, H_{2} S, P H_{3} a n d S i H_{4}]$ -

H_{2} S < P H_{3} < S i H_{4} < C H_{4}

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C H_{4} < S i H_{4} < P H_{3} < H_{2} S

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S i H_{4} < C H_{4} < P H_{3} < H_{2} S

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C H_{4} < H_{2} S < P H_{3} < S i H_{4}

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Solution

The correct option is B $C H_{4} < S i H_{4} < P H_{3} < H_{2} S$
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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