JEE Mains · Chemistry · STD 11 - 4. Chemical bonding and molecular structure
The calculated magnetic moments (spin only value) for species \(\left[ FeCl _{4}\right]^{2-},\left[ Co \left( C _{2} O _{4}\right)_{3}\right]^{3-}\) and \(MnO _{4}^{2-}\) respectively are ..... .
- A \(5.82,0\) and \(0\, BM\)
- B \(4.90,0\) and \(1.73\, BM\)
- C \(5.92,4.90\) and \(0 \,BM\)
- D \(4.90,0\) and \(2.83 \,BM\)
Answer & Solution
Correct Answer
(B) \(4.90,0\) and \(1.73\, BM\)
Step-by-step Solution
Detailed explanation
\((i)\) \(\left[ FeCl _{4}\right]^{-2}\) \(\mu =\sqrt{ n ( n +2)} \,BM\) \(=\sqrt{4(4+2)}\, BM\) \(=\sqrt{24}\, BM \Rightarrow 4.90\, BM\) \((ii)\) \(\left[ Co \left( C _{2} O _{4}\right)_{3}\right]^{-3}\) \(\mu=0\) \((iii)\) \(MnO _{4}^{-2}\)…
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