IB Chemistry Quiz
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STRUCTURE: MODELS OF THE PARTICULATE NATURE OF MATTER
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Which statement best defines the relative atomic mass,
A
r
A_r
A
r
, of an element?
A
The total number of protons and neutrons in the most abundant isotope of the element.
B
The weighted average mass of an atom of the element compared to 1/12th the mass of an atom of carbon-12.
C
The mass of one mole of atoms of the element measured in grams, divided by the Avogadro constant.
D
The average number of nucleons in the atoms of a naturally occurring sample of the element.
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