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JEE Main 202226 JuneMorning Shift

Exam: JEE Main
Year: 2022
Date: 26 June
Shift: Morning Shift
Subject: Chemistry
Chapter: p Block Elements (Group 15, 16, 17 & 18)

JEE Main 2022 · 26 June · Morning Shift · Chemistry · p Block Elements (Group 15, 16, 17 & 18)

The correct order of melting points of hydrides of group 16...

The correct order of melting points of hydrides of group

16

elements is

Options

A ${H}_{2}S < {H}_{2}Se < {H}_{2}Te < {H}_{2}O$
B ${H}_{2}O < {H}_{2}S < {H}_{2}Se < {H}_{2}Te$
C ${H}_{2}S < {H}_{2}Te < {H}_{2}Se < {H}_{2}O$
D ${H}_{2}Se < {H}_{2}S < {H}_{2}Te < {H}_{2}O$

Correct answer

A. ${H}_{2}S < {H}_{2}Se < {H}_{2}Te < {H}_{2}O$

Step-by-step solution

In general molar mass $↑ , MP ↑$ but in ${H}_{2}O$ due to $H$ -bonding, it is maximum among the following:

Property	${H}_{2}O$	${H}_{2}S$	${H}_{2}Se$	${H}_{2}Te$
$m . p . / K$	$273$	$188$	$208$	$222$

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