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     EduGorilla 
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    Compounds Co(NO2)3 and KNO2 are mixed together in the ratio 1 : 3 to form a complex which produces four ions in an aqueous solution.

    What is the correct formula for the complex?

    Options :-

    1. K2[Co(NO2)6]
    2. K2[Co(NO2)4]3
    3. K2[Co(NO2)3]3
    4. K3[Co(NO2)6]
    5. @
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