Question

1 unified atomic mass unit is equal to.

• A. 1/14 of the mass of an atom of carbon-14 isotope
• B. 1/13 of the mass of an atom of carbon-13 isotope
• C. 1/12 of the mass of an atom of carbon -12 isotope
• D. 1/13 of the mass of an atom of carbon-12 isotope

Answer 1

The correct option is C

1/12 of the mass of an atom of carbon -12 isotope

1 unified atomic mass unit is equal to 1/12 of the mass of carbon-12 [¹²C₆] isotope.