Coordination Compounds · JEE Main previous year questions

2006 2 questions

1. Q1282006 · 29 Apr 2006 · Shift 1

   Nickel ($Z=28$) combines with a uninegative monodentate ligand ${\mathrm{X}}^{-}$ to form a paramagnetic complex $[\mathrm{Ni}{\mathrm{X}}_4{]}^{2-}$. The number of unpaired electron(s) in the nickel and geometry of this complex ion are, respectively

   1. A.one, tetrahedral
   2. B.two, tetrahedral
   3. C.one, square planar
   4. D.two, square planar
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   Answer: B

2. Q1292006 · 29 Apr 2006 · Shift 1

   The IUPAC name for the complex $[\mathrm{Co}(\mathrm{N}{\mathrm{O}}_2)(\mathrm{N}{\mathrm{H}}_3{)}_5]\mathrm{C}{\mathrm{l}}_2$ is

   1. A.nitrito-N-pentaamminecobalt (III) chloride
   2. B.nitrito-N-pentaamminecobalt (II) chloride
   3. C.pentaammine nitrito-N-cobalt (II) chloride
   4. D.pentaammine nitrito-N-cobalt (III) chloride
   Show answer

   Answer: D