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JEE Main & Advanced JEE Main Paper (Held on 12-4-2019 Afternoon)

  • question_answer
    The coordination numbers of Co and Al in \[[Co(Cl){{(en)}_{2}}]Cl\] and \[{{K}_{3}}[Al{{({{C}_{2}}{{O}_{4}})}_{3}}],\]respectively, are :
    (en=ethane 1,2 diamine)
    [JEE Main 12-4-2019 Afternoon]

    A) 3 and 3                       

    B) 6 and 6

    C) 5 and 6

    D) 5 and 3

    Correct Answer: C

    Solution :

    en and \[{{C}_{2}}{{O}_{4}}^{2-}\]are bidentate ligand. So coordination number of \[[Co(Cl){{(en)}_{2}}]Cl\] is 5 and \[{{K}_{3}}[Al{{({{C}_{2}}{{O}_{4}})}_{3}}]\]is 6.                  


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