Atoms

1. Protons

1.1. number of protons = atomic number

1.2. The positive charge

2. Nuetrons

2.1. Neutral charge

2.2. The cause of radioactive decay

2.3. Figured in for mass number

2.4. Cause of some isotops

3. Electrons

3.1. Impossible to find location and momentum

3.2. The negative charge

3.3. Makes up most of the area of an atom