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Atoms and matter 2
Question | Answer |
---|---|
the one or two letters of an elemant that represent that element on the periodic table | Symbol |
number of protons in the nucleus | Atomic number |
the average of a proton or neutron each proton or neutron has a mass od one A.M.U | Atomic mass unit |
the sum of the number of protons and neutrons | Mass number |
atoms with same atomic number but diffrent atomic mass same number of protons but diffrent number of neutrons | Isotopes |