The numerical value of a, the van der Waal's constant is maximum for — States of Matter and Gaseous State Chemistry Question

💡 Solution & Explanation

The parameter 'a' is a measure of intermolecular attractive forces. $NH_3$ is a highly polar gas capable of strong hydrogen bonding, so its attractive forces are much greater than those of non-polar He, $H_2$, or $O_2$ .