Question

what statement correctly describes an atomic mass

Answer 1

Answer:

An atomic mass (symbol: ma) is the mass of a single atom of a chemical element. It includes the masses of the 3 subatomic particles that make up an atom: protons, neutrons and electrons. 1 atomic mass unit is defined as 1/12 of the mass of a single carbon-12 atom.

Explanation:

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Answer 2

Answer:

The atomic mass is a weighted average of all of the isotopes of that element, in which the mass of each isotope is multiplied by the abundance of that particular isotope. (Atomic mass is also referred to as atomic weight, but the term "mass" is more accurate.)

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