Question

Which of the following is the weakest?. . A. polar covalent bond. . B. dipole interaction. . C. ionic bond

Answer 1

Answer: The correct answer is Option B.

Step-by-step explanation:

From the given options:

Option A: polar covalent bond

Polar covalent bond is defined as the bond which is formed when there is difference in electronegativity between the atoms forming a bond. For Example: HCl, the bond between the hydrogen and chloride element is a polar covalent bond.

Option B: dipole interaction

Dipole-dipole interactions are occured when partial charges are formed in one molecule and are attracted to the oppositely partial charge in a molecule which is present nearby. This bond is the weakest of all.

Option C: ionic bond

This bond is formed when a complete transfer of electrons takes place from one atom to another atom. Ions are formed during this reaction. Thus, this bond formed is the strongest.

The bond strength order follows:

`\text{Ionic bond}>\text{Polar covalent bond}>\text{Dipole-dipole interactions}`

Hence, the correct answer is Option B.

Answer 2

The weakest bond is the dipole interaction. Dipole-dipole interactions occur when two dipolar molecules interact with each other through space. When a dipole interaction occurs, the partially negative portion of one of the polar molecules is attracted to the partially positive portion of another polar molecule.