Question

where is this reaction used in nuclear fission​

Answer 1

Answer:

Fission is used in nuclear power reactors since it can be controlled, while fusion is not utilized to produce power since the reaction is not easily controlled and is expensive to create the needed conditions for a fusion reaction.

Answer 2

Explanation:

Cadmium and Boron are the commonly used neutron absorbents. To control a chain reaction that could take place in a fission reaction in nuclear plants, neutron absorbents absorb the neutrons to keep the multiplication factor of the reactor equal to one. The absorbing of the extra neutron prevents them from triggering further reactions.