Class XII

A complex involving dsp2 hybridization has
  1. Octahedral geometry
  2. Square planar geometry
  3. Trigonal planar geometry
  4. Tetrahedral geometry
The coordination number of the central ion may be obtained from
  1. The number of ionic bonds formed with the surrounding ions
  2. The number of coordinate bonds formed with the surrounding ions
  3. The number of ions of opposite charge immediately surrounding the specific ion
  4. None of these
Ligand en is an example of
  1. Tridentate ligand
  2. Hexadentate ligand
  3. Monodentate ligand
  4. Bidentate ligand
Sodium pentacyanonitrosylferrate(II) is also called
  1. Sodium ferrocyanide
  2. Sodium sulphocyanide
  3. Sodium cobaltnitrite
  4. Sodium nitroprusside
Blue solution of CuSO4 becomes darker when treated with ammonia because
  1. Ammonia is stronger ligand than water
  2. None of these
  3. Ammonia is highly soluble in water
  4. Ammonia molecule replaces water molecule in solution
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