Question

What is atomic mass?​

Answer 1

Atomic mass:

• The sum of protons and neutrons of a single atom is called as atomic mass.

• The atomic mass is the mass of a atom.

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Atomic mass of first 10 elements:

1. Hydrogen - 1.00797
2. Helium - 4.00260
3. Lithium - 6.941
4. Beryllium - 9.01218
5. Boron - 10.81
6. Carbon - 12.011
7. Nitrogen - 14.0067
8. Oxygen - 15.9994
9. Fluorine - 18.998403
10. Neon - 20.179

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Answer 2

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the mass of an atom of a chemical element expressed in atomic mass units. It is approximately equivalent to the number of protons and neutrons in the atom (the mass number) or to the average number allowing for the relative abundances of different isotopes.