Which of the following statements about the complexion [Coſphen).}" is true? (phen = phenanthroline)
A) The complex ion contains Coll).
B) The complex ion exhibits cls and trans geometric isomers and optical isomers.
C) Because phen is a weak field ligand (smail ∆), the complexion is diamagnetic.
D) Because phen is a strong field ligand (large ∆), the complex ion has four unpaired electrons.
E) The complex ion exhibits two optical isomers, but no geometric isomers. There or pull up for addonources