2.1.1 atomic structure

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5 Terms

1
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What’s an isotope

atoms of the same element with same number of protons but different number of neutrons - diff masses

2
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Whats relative atomic mass

the average mass of one atom of an element compared to 1/12 of the mass of carbon-12 atom

3
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What’s relative isotopic mass

the mass of one isotope compared to 1/12 of the mass of carbon-12 atom

4
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mass number

sum of protons and neutrons

5
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atomic number

total number of protons