Question

Some of the elements have fractional atomic mass.The reason for this could be

• A. The existence of isobar
• B. The existence of isotope
• C. The nuclear reaction
• D. The presence of neutron in the nucleus

Answer 1

The correct option is B

The existence of isotope

Reason for the Fractional Atomic Masses of Elements :
The atomic masses of many elements are infractions and not whole numbers. The fractional atomic masses of elements are due to the existence of their isotopes having different masses.

Conclusion Statement: Option (b) is the correct answer.