Comparing [Co(CN)₆]³^- with [CoCl₆]⁴^-, which of the following statements is true? A) [Co(CN)₆]³^-has more d-electrons than [CoCl₆]⁴^-. B) [Co(CN)₆]³^- is paramagnetic while [CoCl₆]⁴^- is diamagnetic. C) Both complexes are paramagnetic. D) [Co(CN)₆]³^- is diamagnetic while [CoCl₆]⁴^- is paramagnetic. E) [Co(CN)₆]³^- has the same number of d-electrons as [CoCl₆]⁴^-.

Question

Quizplus · Accepted Answer

[Co(CN)₆]^3- is diamagnetic because CN^- is a strong field ligand causing pairing of electrons, while [CoCl₆]^4- is paramagnetic because Cl^- is a weak field ligand and does not cause pairing of electrons. Both complexes have the same number of d-electrons.

Comparing [Co(CN)6]3- with [CoCl6]4-, Which of the Following Statements Is

Comparing [Co(CN)₆]³^- with [CoCl₆]⁴^-, Which of the Following Statements Is