Question

which phrase describes a nuclear chain reaction? (1 point) a reaction in which small nuclei combine into a larger nucleus a series of reactions in which particles from one reaction trigger the next reaction a reaction in which particles spontaneously emit radiation a type of reaction which only takes place in the sun and other stars

Explanation:

A nuclear chain - reaction is a series of reactions in which particles from one reaction trigger the next. In a nuclear chain - reaction, the neutrons released from one fission event can cause other nuclei to undergo fission, continuing the reaction sequence.

Answer:

A series of reactions in which particles from one reaction trigger the next