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

9th Class Science Structure of the Atom Question Bank Atomic Structure Conceptive Subjective Problems

  • question_answer
    Identify the element whose atomic number and mass number are same.

    Answer:

    Hydrogen (protium) atom has no neutrons. Hence, its atomic number and mass number are same.


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