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What are the atomic number and mass number for each of the following isotopes?

Firas

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11 years ago

What are the atomic number and mass number for each of the following isotopes?

What are the atomic number and mass number for each of the following isotopes?

-the chromium isotope with 27 neutrons
-the calcium isotope with 20 neutrons

and explain how you did it.
need help understanding this ----

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bugmenot1

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