BRAINCAKERelative Mass and Relative Charge
An atom consists of a nucleus which contains two types of subatomic particles - protons and neutrons. Electrons - a further type of subatomic particle - occupy a region in space outside the nucleus and are arranged in shells.
The mass of a proton is about 1.67 x 10-27kg. The charge of a proton is +1.60217733 x 10-19C.
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More in Atomic Structure
- Discovery of the Atom
- Structure of the Atom
- Atomic Number and Mass Number
- Isotopes
- Isotopes of Carbon
- Electrons
- Electron Shells
- The Mass Spectrometer
All 22 lessons in Atomic Structure · All AQA AS-level Chemistry topics