12th solve complete question 

12.   Give the formula of each of the following coordination entities:

  (i)   $C{o}^{3+}$ ion is bound to One  $C{l}^{-}, one N{H}_2$ and two bidentate ethylene diamine (en) molecules.
  (ii)   $N{i}^{2+}$  ion is bound to two water molecules and two oxalate ions. Write the name and magnetic behaviour of each of the above coordination entities. (Atomic no. of Co = 27, Ni=28)             Foreign 2012