What is Atomic Mass in Chemistry?

What is the definition of atomic mass in Chemistry? The atomic mass is the average mass of the atoms of an element measured in atomic mass unit (amu, also known as daltons, D).

Explanation:

Atomic mass is the weighted average of the masses of the isotopes present in a natural sample of an element and is expressed in atomic mass units (amu).

Final Answer:

Atomic mass is the weighted average of the masses of the isotopes present in a natural sample of an element. It is expressed in atomic mass units (amu), which is equal to one-twelfth the mass of a carbon-12 isotope. The atomic mass listed in the periodic table is the weighted average of the masses of the isotopes present in a natural sample of the element. For example, the atomic mass of helium is 4.0026 amu, while the atomic mass of sulfur is 32.06 amu.

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