Question

With reference to Nuclear Physics, answer the following question.

Define lu (where u stands for unified atomic mass unit).

Answer 1

1 AMU is the average of proton rest mass and the neutron rest mass. Thus can be expressed as

1 AMU = 1.67377 × 10^-27 kg

= 1.67377 × 10^-24 gram

and C-12 is considered a reference for all atomic mass calculations.