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JEE Main & Advanced Chemistry The Solid State / ठोस प्रावस्था Question Bank Crystal structure and Coordination number

  • question_answer
    What is the coordination number of sodium in \[N{{a}_{2}}O\] [AIIMS 2003]

    A) 6             

    B) 4

    C) 8             

    D) 2

    Correct Answer: B

    Solution :

    In \[N{{a}_{2}}O,\] each oxide ions \[({{O}^{2-}})\] is co-ordinated to \[8\,N{{a}^{+}}\] ions and each \[N{{a}^{+}}\]ion to 4 oxide ions. Hence it has 4 : 8 co-ordination.


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