Atom Structure
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7 Terms
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Proton
mass : 1
charge : + 1
charge : + 1
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Electron
mass : 0
charge : -1
charge : -1
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Neutron
mass : 1
charge : no charge
charge : no charge
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isotope
an atom with the same number of protons and a different number of neutrons
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mass number
number of protons and neutrons
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atomic number
number of protons
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Electron shells
electrons are arranged into shells that orbit the nucleus
the first shell has a maximum of 2 electrons
second shell has maximum of 8 electrons
third shell has maximum of 8 electrons
the first shell has a maximum of 2 electrons
second shell has maximum of 8 electrons
third shell has maximum of 8 electrons