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

💡 Solution & Explanation

The van der Waals constant '$a$' quantitatively measures the strength of intermolecular attractive forces. $\text{NH}_3$ is a polar molecule capable of forming strong hydrogen bonds, unlike the nonpolar $\text{He}$, $\text{H}_2$, and $\text{O}_2$. Hence, it has the strongest forces and highest '$a$'. Therefore, correct answer is D.