What do you mean by atomic mass? How is atomic mass measured? Give the atomic masses of hydrogen, oxygen, sodium, sulphur and calcium.
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The atomic mass of a single atom is simply its total mass and is typically expressed in atomic mass units or amu.
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Atomic mass refers to the mass of an atom also atomic mass of an element is the average mass of the atoms of an element.It is measured in Atomic Mass Unit(amu also known as Dalton's{D}).
Atomic Masses
hydrogen-1.00797
oxygen-15.9994
sodium- 22.98977
sulphur-32.06
calcium-40.08
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