08-06-2020
Chemistry

contestada

An elements mass number is made up of the number of ____ in the nucleus.

protons and neutrons

electrons and neutrons

protons and electrons

atoms and molecules

An elements mass number is made up of the number of in the nucleus protons and neutrons electrons and neutrons protons and electrons atoms and molecules class=

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08-06-2020

Answer:

The answer is protons and nuetrons

Explanation:

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