Question

Dipole-Induced Dipole interactions are present in which of the following pairs:

• A. ${\mathrm{H}}_2\mathrm{O}$ and Alcohol
• B. $\mathrm{HCl}$ and $\mathrm{He}$ atoms
• C. ${\mathrm{SiF}}_4$ and $\mathrm{He}$ atoms
• D. ${\mathrm{Cl}}_2$ and ${\mathrm{CCl}}_4$ atoms

Answer 1

The correct option is B

$\mathrm{HCl}$ and $\mathrm{He}$ atoms

Explanation of correct option

(B) $\mathrm{HCl}$ and $\mathrm{He}$ atoms: The forces or interactions, which occur between a polar molecule and a nonpolar molecule or an atom are termed as Dipole -induced dipole interactions. Here, $\mathrm{HCl}$ (hydrochloric acid) is polar while helium is non-polar, thus, it is an example of Dipole induced dipole.

The dipole-induced dipole interaction can be represented as:

Explanation of incorrect option

(A) ${\mathrm{H}}_2\mathrm{O}$ (water) and alcohol are both polar due to differences in electronegativity of Hydrogen and Oxygen.

(C) ${\mathrm{SiF}}_4$ (Silicon tetrafluoride) and $\mathrm{He}$ (helium) atoms are both non-polar as dipole moment will cancel out to give zero.

(D) ${\mathrm{Cl}}_2$ (Chlorine) and ${\mathrm{CCl}}_4$ (carbon tetrachloride) are both non-polar molecules because both contain symmetry and dipole cancel out to given net dipole moment as zero.

Therefore, option (B) is the correct option. Dipole-Induced Dipole interactions are present in $\mathrm{HCl}$ and $\mathrm{He}$ atoms.