Chemistry-
General
Easy

Question

Which one of the following complex species does not obey the EAN rule?

  1. open square brackets C u open parentheses C N close parentheses subscript 4 end subscript close square brackets to the power of 3 minus end exponent    
  2. open square brackets C r open parentheses N H subscript 3 end subscript close parentheses subscript 6 end subscript close square brackets to the power of 3 plus end exponent    
  3. open square brackets F e open parentheses C N close parentheses subscript 6 end subscript close square brackets to the power of 4 minus end exponent    
  4. left square bracket N i open parentheses C O close parentheses subscript 4 end subscript right square bracket    

The correct answer is: open square brackets C r open parentheses N H subscript 3 end subscript close parentheses subscript 6 end subscript close square brackets to the power of 3 plus end exponent

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