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JEE Mains · Chemistry · STD 12 - 5. Co-ordination chemistry

संकुल \(\left[ Co ( CN )_{6}\right]^{4-}\) के लिए केवल चक्रण चुम्बकीय आघूर्ण का मान........ \(BM\) है। [Co की परमाणु संख्या 27]

  1. A \(1\)
  2. B \(2\)
  3. C \(3\)
  4. D \(5\)
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Answer & Solution

Correct Answer

(B) \(2\)

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Detailed explanation

\({\left[\mathrm{CO}(\mathrm{CN})_{6}\right]^{4-}}\) \(\mathrm{x}+6 \times(-1)=-4\) \(\mathrm{x}=+2\) \(\mathrm{Co}^{2+}:[\mathrm{Ar}] 3 \mathrm{~d}^{7}\) and \(\mathrm{CN}^{-}\)is a strong field ligand which can pair electron of central atom. It has one unpaired electron (…
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