Question

Which of the following statements is TRUE?

A. The number of protons is equal to the mass number.

B. Atomic weight is approximately equal to atomic mass.

C. Mass number is approximately equal to atomic number.

D. Isotopes are elements having the same atomic masses but different atomic numbers.

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Answer 1

B. True,The average atomic mass (sometimes called atomic weight) of an element is the weighted average mass of the atoms in a naturally occurring sample of the element.

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