Distinguish between atomic number and mass number.Answer A. Atomic number is the

Question

Distinguish between atomic number and mass number.Answer

A. Atomic number is the number of protons in the nucleus. Mass number is the total number of protons and neutrons in the nucleus. B. Atomic number is the number of protons, neutrons and electrons in the atom. Mass number is the number of protons in the nucleus. C. Atomic number is the number of electrons. Mass number is the number of protons and neutrons in the nucleus. D. Atomic number refers to the group and period the atom belongs to in the Periodic Table. Mass number is the average mass of all of the isotopes of each element.

Explanation / Answer

the answer is A

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