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Atomic Mass Definition - Atomic Weight Definition

Chemistry Glossary Definition of Atomic Mass - Atomic Weight

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Atomic mass or weight is the average weight of an element's atoms.

Atomic mass or weight is the average mass of the protons, neutrons, and electrons in an element's atoms.

Science Photo Library - ANDRZEJ WOJCICKI, Getty Images
Definition: Atomic mass or atomic weight is the average mass of atoms of an element, calculated using the relative abundance of isotopes in a naturally-occurring element.

Also Known As: Atomic Weight

Examples: The atomic mass of carbon is 12.011; the atomic mass of hydrogen is 1.0079

How To Calculate Atomic Mass

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