Question

Which of the following is correct order of strength?

• A. Ionic bond $>$ Covalent bond $>$ Hydrogen bond $>$ Dipole - Dipole $>$ Vander Waals
• B. Covalent bond $>$ Ionic bond $>$ Dipole - Dipole $>$ Hydrogen bond $>$ Vander Waals
• C. Covalent bond $>$ Ionic bond $>$ Hydrogen bond $>$ Dipole - Dipole $>$ Vander Waals
• D. Ionic bond $>$ Covalent bond $>$ Dipole - Dipole $>$ Hydrogen bond $>$ Vander Waals

Answer 1

Answer: (A)

$\text{Ionic > Covalent > Hydrogen > Dipole-Dipole > Vander Waals}$

Ionic bond is the strongest bond as they are formed by complete transfer of electrons.

A covalent bond is weaker than the ionic bond as they are formed by the sharing of electrons.

A hydrogen bond is weaker than ionic and covalent which are formed by the partial electrostatic attraction between a hydrogen atom which is bound to a more electronegative atom such as nitrogen, oxygen, fluorine, and other adjacent atom bearing a lone pair of electrons.

DIpole-dipole interactive forces are the intermolecular forces between the positive end of one molecule to the negative end of the other. This force is much weaker than hydrogen bonding.

Vander Waals forces are the sum of attractive and repulsive electrical forces between atoms and molecules. As a result, they are the weakest forces.

Thus, Option $A$ is correct.