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AP EAMCET · Chemistry · Hydrogen

The correct order of acidic character of group- 16 hydrides is

  1. A \(\mathrm{H}_2 \mathrm{O} < \mathrm{H}_2 \mathrm{~S} < \mathrm{H}_2 \mathrm{Se} < \mathrm{H}_2 \mathrm{Te}\)
  2. B \(\mathrm{H}_2 \mathrm{O}>\mathrm{H}_2 \mathrm{~S}>\mathrm{H}_2 \mathrm{Se}>\mathrm{H}_2 \mathrm{Te}\)
  3. C \(\mathrm{H}_2 \mathrm{O} < \mathrm{H}_2 \mathrm{~S}>\mathrm{H}_2 \mathrm{Se}>\mathrm{H}_2 \mathrm{Te}\)
  4. D \(\mathrm{H}_2 \mathrm{O} < \mathrm{H}_2 \mathrm{~S} < \mathrm{H}_2 \mathrm{Se}>\mathrm{H}_2 \mathrm{Te}\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(\mathrm{H}_2 \mathrm{O} < \mathrm{H}_2 \mathrm{~S} < \mathrm{H}_2 \mathrm{Se} < \mathrm{H}_2 \mathrm{Te}\)

Step-by-step Solution

Detailed explanation

Acidic character increases down the group as the \(M-\mathrm{H}\) bond strength decreases. Hence, the correct option is (1).