Examine the nuclear reaction: (1/1)h+(1/0)n--> (2/1)h. why is this classified as a nuclear reaction rather than a chemical reaction?
it is not balanced.
a new compound is formed.
a change has occurred in a nucleus.
a new element has been formed.

Option (c) is the correct answer.

Explanation:

A reaction in which there occurs change in the number of protons or neutrons  because of collisions between two nuclei or an atom and a subatomic particle is known as a nuclear reaction.

For example,

Here, a neutron is added to the nucleus of hydrogen atom. Therefore, it is a nuclear reaction.

In a chemical reaction there is gain or loss of electrons which results in the formation of a new compound and no change in the nucleus of an atom.

Thus, we can conclude that the given reaction is classified as a nuclear reaction rather than a chemical reaction because a change has occurred in a nucleus.

the answer would be c