Question

the strength of the covalent bond in H2,F2 and HF is in the order

Answer 1

Answer: $HF > H_{2} > F_{2}$

Explanation:

Bond strength shows how tightly each atom is bound to another and how much energy is required to break the bond between two atoms.

Bond strength is defined as the force with which a chemical bond holds two atoms together in chemistry. This is usually expressed as the amount of energy required to break the bond in kilocalories per mole.

The amount of energy required to break one mole of a specific type of bond and split it into gaseous atoms is called bond energy. Bond energy is directly related to chemical bond strength.

Below are the factors that affect bond strength.

• The bond length increases with increasing atom size and the bond dissociation energy decreases, resulting in a decrease in bond strength.
• The bond dissociation energy of a bond between two identical atoms increases with increasing bond multiplicity.
• The greater the number of lone pairs of electrons on the bonded atoms, the greater the repulsion between them, and the lower the bond dissociation energy.
• As the orbital contribution of the hybrid orbitals increases, the binding energy increases. As a result, the bond energy decreases in the order of sp, $sp^{2}$ $sp^{3}$
• The higher the electronegativity difference, the higher the polarity of the bond and thus the strength of the bond.

#SPJ3

https://brainly.in/question/22075780