Railways Sample Paper RRBs Assistant Loco Pilot and Technician CBT STAGE-I Sample Paper-17

  • question_answer
    Which of the following is a particle with 20 neutrons and 18 electrons!

    A)  \[_{17}C{{l}^{37}}\] 

    B)  \[_{18}A{{r}^{38}}\]

    C)  \[_{19}{{K}^{39}}\]  

    D)  \[_{16}{{S}^{36}}\]

    Correct Answer: B


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