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

  • question_answer
    Hydrogen exists in three isotopic forms, \[_{\text{1}}^{\text{1}}\text{H,}\,\,_{\text{1}}^{\text{2}}\text{H,}\,\,_{\text{1}}^{\text{3}}\text{H}\] respectively known as protium, deuterium and tritium. Why are all the isotopes neutral in nature?

    A) Since neutrons are neutral in nature hence, isotopes are electrically neutral.

    B) All the isotopes have one electron and one proton, hence they are neutral.

    C) All the isotopes have one proton and one neutron, hence they are neutral.

    D) Increasing number of protons in the isotopes make them neutral.

    Correct Answer: B

    Solution :

    Isotopes of hydrogen are neutral due to presence of one proton and one electron.


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