Why is geometrical isomerism not possible in tetrahedral complexes having two different types of unidentate ligands coordinated with the central metal ion ?

Why is geometrical isomerism not possible in tetrahedral complexes having two different types of unidentate ligands coordinated with central metal ion ? .

Which type of isomerism is possible in the following two molecules ?

Geometrical isomerism is found in coordination compounds having coordination number:

In Which case gemetrical isomer cis is possible with M as metal ion if complexes are square planar having CN=4 ?

Tetrahedral complex cannot show geometrical isomerism .

coordination compounds often show various types of isomerism. The isomerism can be categorized in two main types (a) structural isomerism (b) stereo or space isomerism Structural isomerism arises due to the difference in structures of coordination-sempounds while stereo or space isomerism arises on account of the different positions and arrangements of ligands (atoms or groups) in space around the metal lonStructural isomerism can be classified in following types (i) tonization isomers- which give different ions in solution, e.g. [CoBr(NH_(3))_(5)]]SO_(4) and [Co(SO_(4))_(5)(NH_(3))_(5)]Br Hydrate isomers which differ in H_(2)O as ligand or as hydration, e.g. [Cr(H_(2)O)_(5)]CI_(2)(H_(2)O)]Cl_(2).H_(2)O[CrCl_(2)(H_(2)O)]CI.2H_(2)O (iii) Linkage isomers, which differ in atom linked to 'metal atom, e.g. [CO(NO_(2))(NH_(3))_(5)]^(2+) and CO(ONO)(NH_(3))_(6)]^(2+) Coordination isomers- which involve interchange of ligands, e.g. [Co(NH_(3))_(6)] [Cr(CN)_(6)] and [Cr(NH_(3))_(6)] [Co(CN)_(6)] (v) Coordination position isomerism-which arises in the bridged complexes due to the difference in the attachment of ligands with the metal atoms QThe total number of possible isomers for the complex compound [Cu^(ll)(NH_(3))_(4)] [Pt^(ll)Cl_(4) ]are

Why are different colours observed in octahedral and tetrahedral complexes for the same metal and same ligands ?

Which of the following octahedral complex does not show geometrical isomerism ( A and B are monodentate ligands) ?

Which of the following octahedral complex does not show geometrical isomerism ( A and B are monodentate ligands) ?