Question

Dipole moments : $HCl\left(1.03D\right)$ and $HI\left(0.38D\right)$. compare the magnitude of the partial charge on hydrogen atom in $HCl$ with that on the hydrogen atom of $HI$. If it is assumed that the partial positive and negative charges are central on the hydrogen and halogen atoms, respectively, the distance between charge centers are calculated to be $1.27$ and 1.61$\dot{A}$ for $HCl$ and $HI$, respectively :

• A. The charge on the hydrogen atom of $HCl$ is over $3$ times that on the hydrogen atom of $HI$
• B. The charge on the hydrogen atom of $HCl$ is over $2$ times that on the hydrogen atom of $HI$
• C. The charge on the hydrogen atom of $HCl$ is over $4$ times that on the hydrogen atom of $HI$
• D. The charge on the hydrogen atom of $HCl$ is over $5$ times that on the hydrogen atom of $HI$

Answer 1

The correct option is A The charge on the hydrogen atom of $HCl$ is over $3$ times that on the hydrogen atom of $HI$

The charge on the hydrogen atom of $HCl$ is over $3$ times that on the hydrogen atom of $HI$, as the dipole moment of $HCl$ is $3$ times of $HI$.