Question

when two smaller atoms combine into a larger atom, _______ has occurred. a. nuclear fusion b. nuclear fission c. nuclear energy d. none of the above

Answer 1

Answer: option a. nuclear fusion.

Nuclear fusion is the union of atoms leading to a new bigger atom.

Nuclear fission refers to the split of atoms.

Nuclear energy is the energy resulting from nuclear reactions.

Answer 2

Answer: The correct answer is option (a).

Explanation:

Nuclear fission and nuclear fusion both are types of nuclear reactions.

In nuclear fission , splitting of a large atom into smaller atom takes place with release of energy in large amount.

In nuclear fusion , two small atoms combine with each other to form a large atom with release in energy in large amount

The energy released in both the nuclear fission and fusion is termed as nuclear energy.

Hence, the correct answer is option (a).