Question

Which of the following is the correct order of strength?
(A) Ionic bond > Covalent bond > Hydrogen bond > Dipole - Dipole > Van Der Waals
(B) Covalent bond > Ionic bond > Dipole - Dipole > Hydrogen bond > Van Der Waals
(C) Covalent bond > Ionic bond > Hydrogen bond > Dipole - Dipole > Van Der Waals
(D) Ionic bond > Covalent bond > Dipole - Dipole > Hydrogen bond > Van Der Waals

Answer 1

Hint: The bond strength mostly depends on the charges present on each ion and the distance between them.

Complete step by step answer:
The answer is (A) Ionic bond > Covalent bond > Hydrogen bond > Dipole - Dipole > Vander Waals.

The reason is simple because the ionic bonds are formed due to electrostatic attraction between the two atoms hence, they are definitely the strongest ones. They are formed by complete transfer of electrons.
Next comes the covalent bond because they are formed by the overlapping of orbitals of two atoms hence, it is also the strong one but not as strong as an ionic bond.
Then comes the hydrogen bond because the bond is formed when a high electronegative atom like oxygen, nitrogen or fluorine generally are present in hydrogen atom which has a partial positive charge and hence to neutralise that hydrogen bond is formed. It is formed by the partial electrostatic attraction between the hydrogen and other atoms with lone pairs of electrons.

Dipole-dipole interactive forces are the intermolecular forces between the positive end of one molecule to the negative end of another. This force is much weaker than hydrogen bonding.
At last is Van der Waals interaction which is due to the virtue of the number of electrons present in an atom and its size. These forces are the sum of attractive and repulsive electrical forces between atoms and molecules. Hence it is the weakest interaction force.

Ionic bond and Covalent bond-
Ionic bonds result from the mutual attraction between the oppositely charged ions while a covalent bond is a bond that results from a sharing of electrons between nuclei.
The easy way to determine which is strong is to know the energy the bond takes to break itself. That quantity is known as bond dissociation energy. The greater the energy it takes to break the bond, the stronger that bond must be. It turns out that most ionic bonds are considerably more difficult to break than the covalent bonds.
So, the correct answer is “Option A”.

Note: There is always a confusion between the strength of ionic and covalent bonds. But do remember, ionic bonds are stronger than covalent bonds at each point of confusion.