What is atomic mass?

Answer

Atomic mass is the total mass of protons, neutrons, and electrons in a given element, commonly expressed in unified atomic mass units. The International Union of Pure and Applied Chemistry (IUPAC) has defined a unified atomic mass unit as 1/12 of the mass of a single carbon-12 atom.

Atomic mass should not be confused with atomic weight, also termed "relative atomic mass," which is included in the standard periodic tables of chemical elements. The weight or relative mass of an atom of a given chemical element takes into account all of the atoms of that element that are present on earth and in the atmosphere.

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Atomic mass is the number of protons and neutrons in an atom.
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The mass number is a count of the number of particles in an atom's nucleus.
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1. Determine the atomic number of a known isotope by looking up its atomic number on the periodic table. The atomic number reflects the number of protons in the atoms of an element,
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Atomic number is the number which confirms the name of the atom. Hence atomic number. This equals the number of protons in the nucleus. Symbol is Z. Where as the atomic mass is the
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