The unit used to express the relative atomic mass is called?
Correct answer: D. Atomic mass unit
- A. Gram unit
- B. Avogadro's number
- C. Atomic mass
- D. Atomic mass unit
Explanation
One atomic mass unit (1amu) is a mass unit equal to exactly one-twelfth (1/12th) the mass of one atom of carbon-12 isotope, which is the scale used to compare atomic masses. So, the unit used to express relative atomic mass is amu. Thus, option D is correct.
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