Which of these statements about [Co(CN)6]3$-$ is true?

Question

Which of these statements about [Co(CN)₆]^3$-$ is true?

[Co(CN)₆]^3$-$ has four unpaired electrons and will be in a high-spin configuration.

[Co(CN)₆]^3$-$ has no unpaired electrons and will be in a high-spin configuration.

[Co(CN)₆]^3$-$ has no unpaired electrons and will be in a low-spin configuration.

[Co(CN)₆]^3$-$ has four unpaired electrons and will be in a low-spin configuration.

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