Answer:
C. A neutron turns into a proton
D. An electron is ejected from the nucleus
Step-by-step explanation:
- Beta decay is a type of the three major types of decays, others being alpha decay and gamma decay.
- During a beta decay the atomic number of an atom increases by one while the mass number remains the same.
- Beta decay may be classified as; an electron emission, positron emission and electron capture.
- During electron emission an energetic electron is emitted from the nucleus, together with an antineutrino and a neutron in the nucleus turns into a proton.