Given below are two statements: Statement I: Both [Co(NH3)6]3+ and [CoF6]3- complexes are octahedral but differ in their magnetic behaviour. Statement II: [Co(NH3)6]3+ is diamagnetic whereas [CoF6]3- is paramagnetic. In the light of the above statements, choose the correct answer from the options given below:
In this complex, Co³⁺ is in a strong field provided by NH₃ (a strong ligand). The strong field causes the pairing of electrons, making the complex diamagnetic.
Step 2: Analyze [CoF₆]³⁻
In this complex, Co³⁺ is in a weak field provided by F⁻ (a weak ligand). The weak field does not cause pairing of electrons, making the complex paramagnetic.
Step 3: Conclude the Statements
Statement I:True — Both complexes are octahedral but differ in magnetic behavior.
Statement II:True — [Co(NH₃)₆]³⁺ is diamagnetic, and [CoF₆]³⁻ is paramagnetic.
Conclusion
The correct analysis of the magnetic behavior of the complexes confirms that:
Both Statement I and Statement II are true.Step 1: Analyze [Co(NH₃)₆]³⁺
In this complex, Co³⁺ is in a strong field provided by NH₃ (a strong ligand). The strong field causes the pairing of electrons, making the complex diamagnetic.
Step 2: Analyze [CoF₆]³⁻
In this complex, Co³⁺ is in a weak field provided by F⁻ (a weak ligand). The weak field does not cause pairing of electrons, making the complex paramagnetic.
Step 3: Conclude the Statements
Statement I:True — Both complexes are octahedral but differ in magnetic behavior.
Statement II:True — [Co(NH₃)₆]³⁺ is diamagnetic, and [CoF₆]³⁻ is paramagnetic.
Conclusion
The correct analysis of the magnetic behavior of the complexes confirms that:
Both Statement I and Statement II are true.
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