Which if the following statements concerning complex ion Co(en)2Cl2+ is true? en=NH2CH2CHNH2

A)the geometric isomers of the complex ion have identical chemical properties

B) the complex ion exhibits cis an dtrans geometric isomers but no optical isomers

C)the complex ion exhibits two geomtric isomers (CIS and Trans) and two optical isomers

D)the comlex ion contains Co(l)

E) since it is a strong ligand

is the anwser C?

To determine the correct statement concerning the complex ion Co(en)2Cl2+, we need to analyze the provided options one by one.

A) The statement suggests that the geometric isomers of the complex ion have identical chemical properties. This is not true. Geometric isomers typically differ in their chemical behavior due to differences in the spatial arrangement of their ligands.

B) The statement suggests that the complex ion exhibits cis and trans geometric isomers but no optical isomers. This is also not correct. The complex ion Co(en)2Cl2+ does exhibit both cis and trans geometric isomers, but it also exhibits optical isomers due to the presence of chiral ligands.

C) The statement states that the complex ion exhibits two geometric isomers (cis and trans) and two optical isomers. This is the correct answer. The en ligands (NH2CH2CHNH2) in Co(en)2Cl2+ are chiral, which results in the complex having two optical isomers in addition to the cis and trans geometric isomers.

D) The statement claims that the complex ion contains Co(l). This is incorrect since the coordination number for cobalt in this complex is 6, not 1. The roman numeral I (1) indicates a coordination number of 1.

E) The statement mentions that the complex ion is a strong ligand, but it doesn't provide any relevant information. The strength of the ligand does not determine the presence or absence of geometric or optical isomers.

In summary, the correct statement is option C) - the complex ion Co(en)2Cl2+ exhibits two geometric isomers (cis and trans) and two optical isomers.

Yes, the correct answer is C) the complex ion exhibits two geometric isomers (CIS and Trans) and two optical isomers.