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22-02-2018
Chemistry

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Which are isotopes? an atom that has an atomic number of 20 and a mass number of 42 is an isotope of an atom that has?

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hamplus6 hamplus6

04-03-2018

Isotopes have same atomic number or same number of protons, but different number of neutrons and mass number.

If they have same atomic number or same number of protons as the original one they are isotopes.

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