MCQ
Given below are two statements :
Statement I : $\mathrm{H}_{2} \mathrm{Se}$ is more acidic than $\mathrm{H}_{2} \mathrm{Te}$.
Statement II : $\mathrm{H}_{2} \mathrm{Se}$ has higher bond enthalpy for dissociation than $\mathrm{H}_{2} \mathrm{Te}$.
In the light of the above statements, choose the correct answer from the options given below.
  • A
    Both statement I and Statement II are false.
  • B
    Both statement I and Statement II are true.
  • C
    Statement I is true but Statement II is false.
  • Statement I is false but Statement II is true.

Answer

Correct option: D.
Statement I is false but Statement II is true.
(D) Statement I is false but Statement II is true.
Acidic strength : $\mathrm{H}_{2} \mathrm{Se}<\mathrm{H}_{2} \mathrm{Te}$
$\begin{array}{rlll}\Delta_{\text {dis }} H & : H _2 Se \quad>\quad H _2 Te \\ & {[276 KJ / mol ] \quad[238 KJ / mol ]}\end{array}$

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