2. Questions Bank
  3. 9th Class
  4. Science
  5. Structure of the Atom

9th Class Science Structure of the Atom Question Bank Structure of the Atom

  • question_answer
    What does the mass number of an atom represent?

    A)  Only the number of protons

    B)  The number of protons and neutrons  

    C)  The number of protons and electrons

    D)  Only the number of neutrons

    Correct Answer: B

    Solution :

     Mass number \[=\] no. of protons \[+\] no. of neutrons.


You need to login to perform this action.
You will be redirected in 3 sec spinner