When degenerate d-orbitals of an isolated atom/ion come under influence of magnetic field of ligands, the degeneray is lost. The two set t_(2g)(d_(xy),d_(yz),d_(xz)) and e_(g) (d_(x^(2))-d_(x^(2)-y^(2)) are either stabilized or destabilized depending upon the nature of magnetic field. it can be expressed diagrammatically as: Value of CFSE depends upon nature of ligand and a spectrochemical series has been made experimentally, for tetrahedral complexes, Delta is about 4/9 times to Delta_(0) (CFSE for octahedral complex). this energy lies in visible region and i.e., why electronic transition are responsible for colour. such transition are not possible with d^(0) and d^(10) configuration. Q. The vlaue of CFSE (Delta_(0)) for completes given below follow the order, (I) [Co(NH_(3))_(6)]^(3+) (II) [Rh(NH_(3))_(6)]^(3+) (III) [IR(NH_(3))_(6)]^(3+)

When degenerate d-orbitals of an isolated atom/ion come under influenc

1.	When degenerate d-orbitals of an isolated atom/ion come under influence of magnetic field of ligands, the degeneray is lost. The two set t_(2g)(d_(xy),d_(yz),d_(xz)) and e_(g) (d_(x^(2))-d_(x^(2)-y^(2)) are either stabilized or destabilized depending upon the nature of magnetic field. it can be expressed diagrammatically as: Value of CFSE depends upon nature of ligand and a spectrochemical series has been made experimentally, for tetrahedral complexes, Delta is about 4/9 times to Delta_(0) (CFSE for octahedral complex). this energy lies in visible region and i.e., why electronic transition are responsible for colour. such transition are not possible with d^(0) and d^(10) configuration. Q. The vlaue of CFSE (Delta_(0)) for completes given below follow the order, (I) [Co(NH_(3))_(6)]^(3+) (II) [Rh(NH_(3))_(6)]^(3+) (III) [IR(NH_(3))_(6)]^(3+)
Answer» `I LT II lt III` `I GT II gt III` `I lt II gt III` `I=II=III` ANSWER :A