Write the chemical formula of:
(i) Sodium tetrahydridoborate(III).
(ii) Tetrahydroxo zincate(II) ion.

Specify which out of the following complex structures exhibit geometrical isomerism:
(a) Linear,   (b) Square planar,  (c) Tetrahedral, (d) Octahedral.

Give two examples of positive mono-denate ligands. 

26.

Give an example of hexadentate ligand.

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

Write all isomers of [Co(C₂O₄)₃]^3–.

Draw structures of geometrical isomers of [Fe(NH₃)₂(CN)₄]^–.

Which isomer of  [CoCl₂(en)₂]⁺ does not show optical isomerism?