Question

The atomic mass of an element is compared with 1/12th mass if Carbon 12. Why.

Chapter Atoms and Molecules
Class 9​

Answer 1

Explanation:

A carbon-12 atom has a mass of exactly 12 unified atomic mass units. Protons and neutrons in an atom have less mass than if they are unbound, the difference is called mass defect

Answer 2

A carbon-12 atom has a mass of exactly 12 unified atomic mass units. Protons and neutrons in an atom have less mass than if they are unbound, the difference is called mass defect.