JEE Mains · Chemistry · STD 12 - 5. Co-ordination chemistry
The d- electronic configuration of an octahedral Co(II) complex having magnetic moment of 3.95 BM is _______.
- A \(\mathrm{t}_{2 \mathrm{~g}}{ }^3 \mathrm{e}_{\mathrm{g}}{ }^0\)
- B \(\mathrm{t}_{2 \mathrm{~g}}{ }^6 \mathrm{e}_{\mathrm{g}}{ }^1\)
- C \(\mathrm{t}_{2 \mathrm{~g}}{ }^5 \mathrm{e}_{\mathrm{g}}{ }^2\)
- D \(\mathrm{e}^4 \mathrm{t}_2{ }^3\)
Answer & Solution
Correct Answer
(C) \(\mathrm{t}_{2 \mathrm{~g}}{ }^5 \mathrm{e}_{\mathrm{g}}{ }^2\)
Step-by-step Solution
Detailed explanation
\(\mathrm{Co}^{2+}\) complex having \(\mu=3.95 \mathrm{BM}\) Hence number of unpaired electron \(=3\) \(\mathrm{Co}^{2+} \Rightarrow 3 d^7=\mathrm{t}_{2 \mathrm{~g}}^5 \mathrm{e}_{\mathrm{g}}^2\)
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