Answer the following question given this paragraph: 

an identical particle that has been ejected from a heavier nucleus. There are six fundamentally different kinds of nuclear decay reactions, and each releases a different kind of particle or energy. The essential features of each reaction are shown in Figure 20.4 "Common Modes of Nuclear Decay". The most common are alphaand beta decay and gamma emission, but the others are essential to an understanding of nuclear decay reactions. Figure 20.4 Common Modes of Nuclear Decay.


Q: There are six fundamentally different kinds of nuclear decay reactions, and each releases a different kind of particle or what?

 Choices:

- protein

- mineral

- mass

- energy

A:
energy
