The Mass Number of an Atom Is The

question 34

Multiple Choice

The mass number of an atom is the:

• A)number of neutrons only.
• B)the number of electrons plus the number of protons.
• C)the number of protons only.
• D)the number of protons plus the number of neutrons.
• E)the number of electrons,plus the number of neutrons,plus the number of protons.

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