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  5. Structure of the Atom

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

  • question_answer
    The atom of an element has \[10\] electrons, \[10\] protons and \[12\] neutrons. Find the mass number of the element.

    A) \[10\]                            

    B) \[12\]

    C) \[22\]                  

    D)        \[32\]

    Correct Answer: C

    Solution :

     Atomic number= No. of protons/electrons\[=10\] Mass number \[=\] no. of protons \[+\] no. of neutrons \[=10+12=22\]


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