Multiple Choice
An element has a weight of 131.3. The reason the number is not a whole number is that
A) the atomic weight includes the weight of electrons.
B) atomic weight is the average of the mass numbers of all the element's isotopes.
C) the neutrons do not have a single unit weight.
D) the atomic weight does not include the weight of protons.
E) the number of electrons may vary.
Correct Answer:
Verified
Correct Answer:
Verified
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