One atomic mass unit is defined as what?
A1/12th mass of a carbon-12 atom
BMass of one hydrogen atom
CMass of one free proton
D1/16th mass of an oxygen-16 atom
Answer & Solution
Correct answer: A. 1/12th mass of a carbon-12 atom
The unit u is set as one twelfth of the mass of a single carbon-12 atom.
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