によって Peter Clark 16年前.
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Atomic Structure
Atomic Structure
Mass number
The number of protons + the number of neutrons
Atomic number
The number of protons or electrons in an atom
Isotopes
Atoms of the same element with different atomic mass
Due to differing numbers of neutrons
Ions
Are charged particles
Negative: - Anions
Gained electrons
Positive: - Cations
Lost electrons
Are formed when atoms gain or lose electrons
Atoms
Nucleus
Neutron
Mass: - 1 A.M.U.
Charge: - 0
Proton
Mass: - 1 A.M.U
Charge: - +1
Electron
Charge: - -1
Mass: - 1/1840 A.M.U