Chemistry, 26.10.2021 23:40 timiaparker

The atomic mass of magnesium from the Periodic Table is 24.31 amu. What does this mass represent?
a
the weighted average of the two most abundant
isotopes of magnesium
b
the arithmetic average of the two most abundant
isotopes of magnesium
с
the weighted average of all of the naturally
occurring isotopes of magnesium
d
the atomic mass of the most abundant isotope of
magnesium

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The atomic mass of magnesium from the Periodic Table is 24.31 amu. What does this mass represent?<...