abbypadgettt8924 abbypadgettt8924
  • 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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