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

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

  • question_answer
      The atomic number of lithium is 3. Its mass number is 7. (a) How many protons and neutrons are present in a lithium atom? (b) Draw the diagram of a lithium atom.

    Answer:

                      (a) Number of neutrons = Mass number - atomic number Number of neutrons = 7-3 Number of neutrons = 4 Number of protons = atomic number Number of protons = 3 (b) Structure of a lithium atom


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