Question

Why are atomic masses of most of the elements fractional. explain with a suitable example

Answer 1

The atomic masses of most elements are fractional because they exist as a mixture of isotopes of different masses. Most elements occur as a mixture of isotopes of different masses. The fractional atomic masses arise because of this mixture. mass = total mass of all atoms/number of atoms.

For example, if you had 6 protons and 6 electrons you would have Carbon. But if you had 8 protons and 8 electrons then you have Oxygen.

if you are satisfy with my ans then mark me as a brainlist

if there is something wrong then kindly rectify it

Answer 2

Atomic masses of most of the elements in atomic mass units involve fractions because atomic mass of an element is the average of relative masses of its various isotopes. While taking average, the result appears as a fraction.