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JEE Mains · Chemistry · STD 12 - p -Block elements - ll

Below are two statements. One is labeled as Assertion \((\text A)\) and the other as Reason \((\text R)\).
Assertion \((\text A):\)\(​\mathrm{H}_2 \mathrm{Te}\) is more acidic than \(\mathrm{H}_2 \mathrm{S}\).
Reason \((\text R):\) The bond dissociation enthalpy of \(\mathrm{H}_2 \mathrm{Te}\) is less than that of \(\mathrm{H}_2 \mathrm{S}\).
In the context of the above statements, choose the correct answer from the following options:

  1. A Both \(A\) and \(R\) are true, but \(R\) is not the correct explanation of \(A.\)
  2. B Both \(A\) and \(R\) are true, and \(R\) is the correct explanation of \(A.\)
  3. C \(A\) is false, but \(R\) is true.
  4. D \(A \) is true, but \(R\) is false
Verified Solution

Answer & Solution

Correct Answer

(B) Both \(A\) and \(R\) are true, and \(R\) is the correct explanation of \(A.\)

Step-by-step Solution

Detailed explanation

Due to lower Bond dissociation enthalpy of \(\mathrm{H}_2 \mathrm{Te}\) it ionizes to give \(\mathrm{H}^{+}\)more easily than \(\mathrm{H}_2 \mathrm{S}\).
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