Medium MCQ +4 / -1 PYQ · JEE Mains 2024

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R:

Assertion A: $\mathrm{H}_2 \mathrm{Te}$ is more acidic than $\mathrm{H}_2 \mathrm{~S}$.

Reason R: Bond dissociation enthalpy of $\mathrm{H}_2 \mathrm{Te}$ is lower than $\mathrm{H}_2 \mathrm{~S}$.

In the light of the above statements, choose the most appropriate from the options given below:

  1. A Both $A$ and $R$ are true and $R$ is the correct explanation of $A$. Correct answer
  2. B Both $A$ and $R$ are true but $R$ is NOT the correct explanation of $A$.
  3. C $A$ is false but $R$ is true.
  4. D $A$ is true but $R$ is false.

Solution

<p>Due to lower Bond dissociation enthalpy of $\mathrm{H}_2 \mathrm{Te}$ it ionizes to give $\mathrm{H}^{+}$ more easily than $\mathrm{H}_2 \mathrm{S}$.</p>

About this question

Subject: Chemistry · Chapter: Periodic Table and Periodicity · Topic: Periodic Trends

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