Statement-I : The boiling points of the following hydrides of group 16 elements increases in the order: Statement-II : The boiling points of these hydrides increase with increase in molecular mass. [2022]

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Solution

Q.
Given below are two statements:

Statement-I : The boiling points of the following hydrides of group 16 elements increases in the order: $H_{2} O < H_{2} S < H_{2} Se < H_{2} Te .$

Statement-II : The boiling points of these hydrides increase with increase in molecular mass.

In the light of the above statements, choose the most appropriate answer from the options given below: [2022]

1 Both statement-I and statement-II are correct.

2 Both statement-I and statement-II are incorrect.

3 Statement-I is correct but statement-II is incorrect.

4 Statement-I is incorrect but statement-II is correct.

Ans.
(2)

$\begin{matrix} H_{2} O & H_{2} S & H_{2} Se & H_{2} Te \\ B . Pt . : & 373 K & 213 K & 232 K & 269 K \end{matrix}$

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