Question -
1 u or 1 amu (atomic mass unit) is equal to ___.
Options:
A .  (116)th of the mass of an atom of oxygen.
B .  (112)th of the mass of one atom of carbon 12.
C .  12 carbon atoms.
D .  16 oxygen atoms.
Answer: Option B : B Carbon -12 isotope is used as the standard reference for measuring atomic masses. 1 atomic mass unit is a mass unit equal to exactly(112)ththe mass of one atom of carbon 12. It is expressed as u or amu.
Submit Your Solution hear: