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Question: Answered & Verified by Expert
Among the following, van der Waals' constant $a$ would be maximum for
ChemistryStates of MatterAP EAMCETAP EAMCET 2021 (24 Aug Shift 1)
Options:
  • A $\mathrm{H}_2$
  • B $\mathrm{O}_2$
  • C $\mathrm{CH}_4$
  • D $\mathrm{NH}_3$
Solution:
1006 Upvotes Verified Answer
The correct answer is: $\mathrm{NH}_3$
van der Waals' constant (a) depend upon attraction i.e.
$$
a \propto \text { attraction }
$$
There is maximum attraction in $\mathrm{NH}_3$ because there is $\mathrm{H}$-bond and in all other compounds, have van der Waals' force.

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