In: Chemistry
Select the answer for which all statement(s) is/are TRUE regarding ligands in coordination complexes:
I. Complexes with CN = 4 are typically square planar for d^8 metal centers.
II. Chelating ligands always bind the metal center in a polydentate fashion (CN ≥ 2).
III. The charge of the ligands is the only component needed to determine the metal oxidation state in a complex.
IV. Optical isomers exist when a molecule can be superimposed upon its mirror image.
Answer choices:
A) I, II, and IV
B) II only
C) I and II
D) I and III