Differentiate between atomic mass and mass number.
(N/A) Atomic mass: The atomic mass of an atom is defined as the mass equal to one-twelfth $(1/12)$ of the mass of one atom of carbon-$12$.
Mass number: The mass number is the sum of the total number of protons and neutrons present in the nucleus of an atom.
Mass number: The mass number is the sum of the total number of protons and neutrons present in the nucleus of an atom.
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