Match the items in each column into appropriate pairs.
A. Results in particles with larger masses than the beginning nuclides
B. Results in particles that have smaller masses than the original parent nuclide
C. A spontaneous process that can occur if a nuclide has an unstable arrangement of particles in its nucleus.
1. nuclear fission
2. nuclear fusion
3. radioactive decay
A. 1. nuclear fission
B. 2. nuclear fusion
C. 3. radioactive decay