Question

2 examples of mass number ​

Answer 1

Explanation:

mass of hydrpgen 1 amu

mass of oxygen. 16 amu

Answer 2

Answer:

For example, 35Cl (17 protons and 18 neutrons) has a mass number of 35 and an isotopic mass of 34.96885

Explanation:

The difference between mass number of an atom and its isotopic mass is known as the mass excess.