Ethylene diamine H2N-CH2-CH2-NH2 (represented as en). There are two coordination sites in it shown by lone pair of electrons at two nitrogen atoms.
Specify which out of the following complex structures exhibit geometrical isomerism:
(a) Linear, (b) Square planar, (c) Tetrahedral, (d) Octahedral.
Write the chemical formula of:
(i) Sodium tetrahydridoborate(III).
(ii) Tetrahydroxo zincate(II) ion.
Why is geometrical isomerism not possible in tetrahedral complexes having two different types of unidentate ligands coordinated with the central metal ion ?