Atomic structure
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chemistry for materials and nano technology
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4 Terms
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Atoms
The basic building blocks of all matter, consisting of a nucleus (containing protons and neutrons) surrounded by electrons.
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Isotopes
Atoms of the same element that have the same number of protons but different numbers of neutrons, resulting in different mass numbers.
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Atomic mass units
A standard unit for expressing the mass of atoms, molecules, and subatomic particles.
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Atomic mass
the number of protons and neutrons in the atom's nucleus
Note 
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