JEE Mains · Chemistry · STD 12 - 5. Co-ordination chemistry
The observed magnetic moment of the complex \(\left[ Mn (\underline{ NCS })_6\right]^{ x- }\) is \(6.06\,BM\). The numerical value of \(x\) is \(.......\).
- A \(4\)
- B \(6\)
- C \(8\)
- D \(10\)
Answer & Solution
Correct Answer
(A) \(4\)
Step-by-step Solution
Detailed explanation
\(\left[ Mn ( NCS )_6\right]^{x-}\) Number of unpaired electron \(=5\) So, \(Mn\) must be in \(+2\) oxidation state \(\left( Mn ^{+2}\right)\) \(\Rightarrow 2+(-6)=-x\) \(\Rightarrow-4=-x\) \(\Rightarrow x=4\)
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