2. Questions Bank
  3. 9th Class
  4. Science
  5. Atoms and Molecules

9th Class Science Atoms and Molecules Question Bank 9th CBSE Science Atoms and Molecules

  • question_answer
      (a) What is the relative atomic mass of an element? (b) What is the average atomic mass of hydrogen?

    Answer:

           (a) Relative atomic mass is defined as the number of times a given atom is heavier than 1/12th of mass of 1 atom of C-12.                           (b) The atomic mass of hydrogen is taken as 1u whereas actually it is 1.008 u.


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