Question

the lewis diagram of c₂h₅cl is shown. which of the following is a type of intermolecular force that occurs in a sample of pure c₂h₅cl(l)?
(a) dipole - dipole
(b) ionic
(c) covalent
(d) hydrogen bonding

Explanation:

• Ionic (B): Ionic bonds involve the transfer of electrons between atoms (usually a metal and a non - metal). $C_2H_5Cl$ is an organic compound (non - metal - non - metal bonding), so ionic forces are not present.
• Covalent (C): Covalent bonds are within the molecule (intramolecular), not intermolecular forces. The question asks for intermolecular forces.
• Dipole - dipole (A): $C_2H_5Cl$ is a polar molecule. In polar molecules, the positive end of one molecule is attracted to the negative end of another molecule. This is the dipole - dipole force.
• Hydrogen bonding (D): Hydrogen bonding occurs when $H$ is bonded to highly electronegative atoms like $N$, $O$, or $F$. In $C_2H_5Cl$, $H$ is bonded to $C$ (not a highly electronegative atom for hydrogen - bonding criteria).

Answer:

A. Dipole - dipole