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21-05-2018
Chemistry

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Define atomic number and atomic mass number under what conditions are two atoms different isotopes of the same element?

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Аноним Аноним

21-05-2018

Atomic number is the number of protons in the element's nucleus.

The atomic mass number is the number of protons plus the number of neutrons in the nucleus.

Different isotopes have the same number of protons but different number of neutrons

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