Question

What is meant by Unified Atomic Mass ?

Answer 1

• During earlier time, relative mass of an atom was considered for measuring the mass of an atom directly. But since the founding of unified mass, relative mass is not accepted henceforth.
• Unified atomic mass is the unit of atomic mass called as Dalton.
• Its symbol is ‘u’. lu = 1.66053904 x 10^-27 kg.