JEE Mains · Chemistry · STD 12 - 5. Co-ordination chemistry
The ' Spin only ' Magnetic moment for \(\left[\mathrm{Ni}\left(\mathrm{NH}_3\right)_6\right]^{2+}\) is _______ \(\times 10^{-1} \mathrm{BM}\). \((\) given \(=\) Atomic number of \(\mathrm{Ni}: 28)\)
- A \(20\)
- B \(28\)
- C \(30\)
- D \(35\)
Answer & Solution
Correct Answer
(B) \(28\)
Step-by-step Solution
Detailed explanation
\(\mathrm{NH}_3\) act as WFL with \(\mathrm{Ni}^{2+}\) \(\mathrm{Ni}^{2+}=3 \mathrm{~d}^8\) \(Image\) No. of unpaired electron \(=2\) \(\mu=\sqrt{n(n+2)}=\sqrt{8}=2.82 \mathrm{BM}\) \(=28.2 \times 10^{-1} \mathrm{BM}\) \(\mathrm{x}=28\)
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