Question

1. a(n) ____ is a high - energy electron released from a nucleus during radioactive decay.

a. alpha particle
b. gamma ray
c. beta particle
d. neutron

Explanation:

In radioactive decay, a beta - particle is a high - energy electron or positron released from a nucleus. An alpha - particle is a helium nucleus, a gamma - ray is a high - energy photon, and a neutron is a subatomic particle with no charge present in the nucleus.

Answer:

c. beta particle