Hi Albert, I copied the questions here for easier reference. For examples of calculating the spin-only magnetic moment, see the examples at http://wwwchem.uwimona.edu.jm:1104/spectra/MagExamples.html. In the formula, μs.o. = √{4S(S+1)}, S is the total spin, or Σms where ms is the electron spin quantum number (+½ or –�?. It gives examples of the calculation in transition metal complexes with 1 unpaired electron, 2 unpaired electrons, etc.
I'll have to look at the rest of these tonight, but meantime, go ahead and post your answers so I can see how you are doing with these! What you need to determine is the number of unpaired electrons in each complex. This will depend on the charge of the transition metal and in some cases, the type of ligand field (octahedral, square planar, tetrahedral, etc.) and whether the complex is in the low spin or high spin configuration (which depends on whether the transition metal in is a weak crystal field or strong crystal field).
Steve
Q1- The spin only magnetic moment for the complex [V(H2O)6]2+ is (water - weak field ligand):
2.83 BM
4.90 BM
5.92 BM
1.73 BM
3.88 BM
Q2- How many unpaired electrons are there in the complex ion [Ni(H2O)6]2+? (water - weak field ligand)
1
2
3
4
5
Q3- The oxidation state of the central metal ion in the complex [Mn(CN)6]3�?/SUP> is:
3+
4+
6+
2+
5+
Q4- What is the coordination number about the metal ion for the complex [Co(NH3)4Cl2]Cl?
2
4
3
6
5
Q5- The oxidation state of the central metal ion in the complex ion [CoCl2(NH3)4]+ is:
5+
3+
6+
2+
4+
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