Chemistry-
General
Easy

Question

Which of the following arrangements does not represent the correct order of the property stated against it?

  1. Sc < Ti < Cr < Mn : number of oxidation states    
  2. V2+ < Cr2+ < Mn2+ < Fe2+ : paramagnetic behaviour    
  3. Ni2+ < Co2+ < Fe2+ < Mn2+ : lonic size    
  4. Co3+ < Fe3+ < Cr3+ < Sc3+ : stability in aqueous solution    

The correct answer is: V2+ < Cr2+ < Mn2+ < Fe2+ : paramagnetic behaviour


    The unpaired electrons in Fe2+ ion (four) are less than in Mn2+ ion (five)
    \Fe2+ ion is less paramagnetic than Mn2+ ion.
    The correct order is :
    V2+ < Cr2+ < Fe2+ < Mn2+

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