Draw all possible isomers of
(i) `[Pt(NH_(3))_(4)CI_(2)]^(2+)`
(ii) `[Pt(gly)_(2)]^(0)`
`(ii) [Pt{P(C_(2)H_(5))_(3)}CI_(2))]_(2)`
(iv) `[Cr(NH_(3))(OH)_(2)CI_(3)]^(2--)` .

Explanation

`Pt(NH_(3))_(4)CI_(2)]^(2+)` ion This ion is an octahedral ion of `[Ma_(4)b_(2)]` type and hence has two geometrical isomers viz cis and trans isomers In cis -isomer two `CI^(Θ)` ions are in cis- position and in trans - isomer these ions have trans position

(ii) `[Pt(gly)_(2)]^(0)` Is is square planar complex of `[M(AB)_(2)]` type in which `gly^(Θ)` ion `(NH_(2).CH_(2).COO^(Θ))` is an unsymmetrical didentate ligand This complex has two geometrical isomers viz and trans

(iii) `[Pt{P(C_(2)H_(5))_(3)}CI_(2)]_(2)` it is a briged binuclear planar complex and exists in three isomeric forms viz cis trans and unsymmetrical

(iv) `[Cr(NH_(3))(OH)_(2)CI_(3)]^(2)` ion `[Ma_(3)b_(2)c]^(npm)` type This ion has three geometric isomers

(a) `CI - CI cis , OH -OH cis`
(b) `CI -CI` trans `OH -OH` trans