contestada

The relative atomic mass of an element is:

A. the mass of only the neutrons in the atom's nucleus.
B. the mass of its atoms compared to the mass of a carbon-12 atom.
C. the mass of its isotopes compared to the mass of a normal atom.
D. the mass of its atoms averaged over time.

Respuesta :

is a measure of how heavy atoms are. It's the ratio of the average mass per atom of an element from a given sample to 1/12 the mass of a carbon-12 atom."

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