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Chhattisgarh PMT Chhattisgarh PMT Solved Paper-2004

  • question_answer
    The atomic radius of elements of which of the following series would be nearly the same?

    A)  \[Na,K,Rb,Cs\]

    B)  \[Li,Be,B,C\]

    C)  \[Fe,Co,Ni,Cu~\]

    D)  \[F,Cl,Br,I\]

    Correct Answer: C

    Solution :

    d-block
    Period \[VIII\] \[VIII\] \[VIII\] \[IB\]
    \[Fe\] \[Co\] \[Ni\] \[Cu\]
    Atomic radius of \[Fe,\] \[Co,\] \[Ni\] and \[Cu\] are approximately equal (same). It is due to screening effect.


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