QJEEAdv23Chb3a4: JEE Advanced 2023 Chemistry - Class 12 JEEAdv23Chb3a4 Solution: The number of heteroatoms present in one molecule of is…

The number of heteroatoms present in one molecule of $\mathbf{R}$ is _________.

[Use : Molar mass (in $\left.\mathrm{g} \mathrm{mol}^{-1}\right)$ : $\mathrm{H}=1, \mathrm{C}=12, \mathrm{~N}=14, \mathrm{O}=16, \mathrm{Br}=80, \mathrm{Cl}=35.5$
Atoms other than $\mathrm{C}$ and $\mathrm{H}$ are considered as heteroatoms]