Question

The collisions between reacting molecules are effective only when they acquire ______ energy.

Answer 1

The collisions between reacting molecules are effective only when they acquire threshold energy.

Explanation:

Threshold energy is the minimum amount of energy that reacting molecules must possess during a collision for a reaction to occur. Only collisions with energy equal to or greater than the threshold energy lead to the formation of products. Collisions without sufficient energy are ineffective and do not result in a chemical reaction.