Heteroleptic complex.

Identify the correct statements from the following (I)In [CoCl(NH_3)_5]^(2+) , the Lewis acid is Co^(3+) (II)An example for heteroleptic complex is [Co(NH_3)_6]^(3+) (III)The hybridisation of Mn in [MnBr_4]^(2-) is dsp^2 (IV)In [Ni(CO)_4] , the metal-carbon bond possesses sigma and pi character

Geometrical isomerism arises in heteroleptic complexes due to different possible geometrical arrangement of the ligands. Important examples of this behaviour are found with coordination number 4 and 6. Such isomerism is not possible for a tetrahedral geometry but it is possible for square planar as well as octahedral complexes. Optical square planar as well as octahedral complexes. Optical square planar as well as octahedral complexes. Optical isomers are mirror images that cannot be superimposed on one another. These are called enantiomers. Optical isomerism is common in octahedral complexes involving bedentate ligands. For which of the following complexes, are optical isomers possible ? (P) [Cr("ox")_(3)]^(3-)" "(Q) [Cr(NH_(3))_(4)("ox")]^(+) (R ) [Co("ox")_(2)(NH_(3))_(2)]^(-) Select the correct answer using the codes given below :

Which of the following complex (s) is//are an example of homolepic complex .

Which of the following complex is heteroleptic type?

Which of the following complexes are heteroleptic ?

Which of the following complexes are heteroleptic -