NEET Sample Paper NEET Sample Test Paper-74

  • question_answer
    Solids are attracted by magnetic field due to the presence of atoms, ions or molecules with unpaired electron, called paramagnetic. Which among the following is paramagnetic?

    A)  \[\operatorname{C}{{l}_{2}}{{O}_{7}}\]                     

    B)  \[\operatorname{C}{{l}_{2}}O\]

    C)  \[\operatorname{C}l{{O}_{2}}\]                       

    D)  \[\operatorname{C}{{l}_{2}}{{O}_{5}}\]

    Correct Answer: C

    Solution :

    Molecules Total number of electrons Magnetic behaviour
    \[C{{l}_{2}}{{O}_{7}}\] \[7\times 2+7\times 6\]\[=14+42=56\] Diamagnetic
    \[C{{l}_{2}}O\] \[7 \times  2 + 6 = 20\] Diamagnetic
    \[Cl{{O}_{2}}\] \[7\times 1+6\times 2=19~\] Paramagnetic
    \[C{{l}_{2}}{{O}_{5}}\] \[7\times 2+6\times 5=44\] Diamagnetic


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