Question

Atomic mass of an atom is in fraction but not in whole number. Why ?

Answer 1

Answer:

This is because they are the Average Atomic Mass of that element. When an element has isotopes , the mass of every isotope and it's percentage of existence in nature is taken into consideration and the Average Atomic Mass is calculated .

Answer 2

Answer:

This is because they are the Average Atomic Mass of that element. When an element has isotopes , the mass of every isotope and it's percentage of existence in nature is taken into consideration and the Average Atomic Mass is calculated.