Copper Isotopes
Chemistry
Level
1
Copper exists naturally as two isotopes, whose atomic masses are given below.
- : 62.9296 amu
- : 64.9278 amu
Which of the following additional information would be needed to calculate the molar mass of copper?
The percent abundance of copper-63
The atomic mass of copper-64
The average atomic radius of copper
The half-lives of copper-63 and copper-65
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1 solution
Molar mass of an element is the weighted average of atomic masses based on isotopic compositions.