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Question

Which is a Lewis base I subscript 2 end subscript plus I to the power of minus end exponent rightwards arrow I subscript 3 end subscript superscript minus end superscript blank ?

  1. I subscript 2 end subscript  
  2. I subscript 3 end subscript superscript minus end superscript  
  3. I to the power of minus end exponent  
  4. None of these  

The correct answer is: I to the power of minus end exponent


    Electron donors are Lewis base.
    In the reaction I subscript 2 end subscript plus I to the power of minus end exponent rightwards arrow I subscript 3 end subscript superscript minus end superscript comma I to the power of minus end exponent donates a pair of electron and I subscript 2 end subscript accepts it to form I subscript 3 end subscript superscript minus end superscript.
    therefore blank 1 to the power of minus end exponentis Lewis base.

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