Q34 of 50 Page 124

CuSO4.5H2O is blue in colour while CuSO4 is colourless. Why?

In CuSO4.5H2O, there are water molecules that act as ligands. These ligands cause crystal field splitting and the d orbitals are no longer degenerate. The electrons can now be excited to a higher d orbital and therefore show colour. Whereas, in CuSO4, there are no water molecules to act as ligands, so no crystal field splitting happens.


More from this chapter

All 50 →
32

Arrange following complex ions in increasing order of crystal field splitting

energy (DO) :


[Cr(Cl)6]3–, [Cr(CN)6]3–, [Cr(NH3)6]3+.


 33

Why do compounds having similar geometry have different magnetic moment?

 35

Name the type of isomerism when ambidentate ligands are attached to central

metal ion. Give two examples of ambidentate ligands.


 36

Match the complexions given in Column I with the colours given in Column IIand assign the correct code:

Code: