Question

Given below are two statements :
Statement I : [Co(NH3)6] 3+ is a homoleptic complex whereas [Co(NH3)4Cl2] + is a heteroleptic complex.
Statement II : Complex [Co(NH3)6] 3+ has only one kind of ligands but [Co(NH3)4Cl2] + has more than one kind of ligands.
In the light of the above statements, choose the correct answer from the options given below

• A. Both Statement I and Statement II are true
• B. Both Statement I and Statement II are false
• C. Statement I is true but Statement II is false
• D. Statement I is false but Statement II is true

Answer 1

Answer: (A)

Both Statement I and Statement II are true

Answer 2

1. $[Co(NH_3)_6]^{3+}$ has a low-spin configuration as $NH_3$ is a strong field ligand. All electrons pair up, making it diamagnetic.
2. $[CoF_6]^{3-}$ has a high-spin configuration as $F^-$ is a weak field ligand, resulting in unpaired electrons and paramagnetic behavior.
3. Both complexes are octahedral but differ in magnetic properties due to the nature of ligands.