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Question

What is the relative atomic mass of cadmium?

A
112.411 amu
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B
20.00 amu
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C
21.00 amu
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D
20.43 amu
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Solution

The correct option is A 112.411 amu
The relative atomic mass is an average of the atomic masses of all the different isotopes in a sample, with each isotope's contribution to the average determined by how big a fraction of the sample it makes up.
The relative atomic mass of Cadmium is 112.411 amu.

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