Question

Bond formation is always$\dots \dots \dots \dots \dots$

Answer 1

Bond formation- Bonds are formed when valence electrons; the electrons in the outermost electronic shell of an atom, interact with each other.

• As the formation of bonds increases the stability of the bonded atoms, heat gets liberated during the process.
• Therefore, bond formation is always an exothermic reaction.

Exothermic reaction-

• An exothermic reaction is a reaction for which the overall standard enthalpy change $\Delta H_0$ is negative.
• Exothermic reactions usually release heat.

Hence, bond formation is always exothermic.