Which of the following BEST describes what occurs in a fusion reaction?

Question

a
A chemical reaction occurs between the nuclei.
b
Two low mass nuclei are joined to form one nucleus and gives off energy.

c
Electrons are shared between the nuclei.

d
A single nucleus divides into two or more nuclei and gives off energy.

Answer 1

The best description of what occurs in a fusion reaction is:

b. Two low mass nuclei are joined to form one nucleus and gives off energy.

Fusion typically involves combining light atomic nuclei (such as hydrogen isotopes) to produce a heavier nucleus (like helium) and releasing a significant amount of energy in the process.