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Alpha Decay
Largest of the nuclear radiation particles
Atomic number DECREASES by 2
Atomic mass DECREASES by 4

Beta Decay
Smaller particles
Atomic number INCREASES by 1
Atomic mass stays the same

Gamma Emission
wave, not particle
no change in atomic number or mass

Positron Emission
decreases in the number of protons
Atomic number DECREASES by 1
no change in the mass number

Beta Capture
a proton captures an electron and is transformed into a neutron
Atomic number decreases by 1
no change in the mass