Answer:
Step-by-step explanation:
AMU stands for atomic mass unit. It is used to define the mass of an atom.
1 amu is defined as the mas of one twelfth of the mass of one carbon - 12 atom.
1 amu = mass of 1/12 of one carbon 12 atom
It is said to be that 1 amu is the average mass of one proton and one neutron.