Question

explain why atomic weights of elements are not whole numbers​

Answer 1

Explanation:

1. The sum of the number of protons and neutrons in an atom is called the mass number.
2. Atomic mass is never an integer number for several reasons:

• The atomic mass reported on a periodic table is the weighted average of all the naturally occuring isotopes.
• Being an average it would be most unlikely to be a whole number.

Answer 2

The atomic masses listed in the periodic table are not whole numbers because they are weighted averages of the masses and abundances of all of the...