Essential Chemistry for IGCSE - Chemical Calculations (Section 7 - No. 17)
What does the relative atomic mass (Ar) represent?
The mass of an atom in grams.
The average mass of an atom of an element compared to carbon-12.
The number of protons in an atom.
The number of neutrons in an atom.
Explanation
Relative atomic mass is defined as the average mass of an atom of an element compared to carbon-12.
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