Question

How can I identify and draw the geometric isomers for the isomers of `[Ni(CN)_2Cl_2]^(2-)`?

Answer 1

You can do this with ease. The square planar nickel complex can support cis or trans configurations.

Explanation:

Well, you can do this with ease if you know that this `Ni^(2+)` complex is square planar. You have 4 ligands to distribute around the sides of the square, the cyanide ligands can be cis (on the same side as each other) or trans. I couldn't find a good picture to illustrate the isomers; find a textbook on inorganic chemistry.