Which one among the following is the most appropriate statement with respect to the atomic weight of an element?

• A

  The atomic weight of an element is the sum total of the number of protons and neutrons present in the atom of the element
• Correct answer
  B

  Unlike mass number, the atomic weight of an element can be a fraction
• C

  The atomic weight of an element is a whole number
• D

  The atomic weight of all the atoms in an element is the same

Hence, the correct answer is option: 'B'.