What are the three types of radioactive decay?
1. Alpha Decay: The isotope will lose 2 protons anad 2 neutrons. As a result, the atomic number will change by 2 and the atomic mass (protons plus neutrons) will change by 4.
2. Beta Decay: The isotope will lose 1 electron. This electron is given off by a neutron, which causes it to change into a protron. Resulting in a positive change of one to the atomic numner, but no change in mass.
3. Electron Capture: This is the opposite of beta decay. Isotope gains an electron, converting a protron to a neutron. Resulting in a negative change of one to the atomic numner and no change to the atomic mass.