24. Transition Metals and Coordination Compounds
Magnetic Properties of Complex Ions: Octahedral Complexes
24. Transition Metals and Coordination Compounds
Magnetic Properties of Complex Ions: Octahedral Complexes - Video Tutorials & Practice Problems
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1
concept
For octahedral complexes, Weak-Field Ligands create High-spin complexes and Strong-Field Ligands create Low-spin complexes.
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2
example
Example
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3
Problem
ProblemDetermine the spin and number of unpaired electrons in the following complex ion: [Mn(en)3]3+.
A
high-spin; 1 unpaired electron
B
low-spin; 1 unpaired electron
C
high-spin; 2 unpaired electrons
D
low-spin; 2 unpaired electrons
4
Problem
ProblemDetermine the spin and number of unpaired electrons in the following complex ion: [Cd(H2O)4]2+.
A
high-spin; 2 unpaired electrons
B
low-spin; 2 unpaired electrons
C
high-spin; 0 unpaired electrons
D
low-spin; 4 unpaired electrons
5
Problem
ProblemWhich of the following complex ions is/are diamagnetic in nature?
I. [Mn(Br4)]2– II. [V(NO2)4]4– III. [Zn(NH3)4]2+ IV. [Sc(H2O)6]3+
A
I, II, and IV
B
II and III
C
I and II
D
I, III, and IV
E
iii and Iv
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PRACTICE PROBLEMS AND ACTIVITIES (17)
- Spinach contains a lot of iron but is not a good source of dietary iron because nearly all the iron is tied up...
- For each of the following complexes, draw a crystal field energy-level diagram, assign the electrons to orbita...
- Draw a crystal field energy-level diagram, assign the electrons to orbitals, and predict the number of unpaire...
- Which of the following complexes are paramagnetic?(a) [Mn(CN)6]3-(b) [Zn(NH3)4]2+ (tetrahedral) (c) [Fe(CN)6]4...
- Which of the following complexes are diamagnetic?(a) [Ni(H2O)6]2+(b) [Co(CN)6]3-(c) [HgI4]2- (tetrahedral) (d)...
- Draw a crystal field energy-level diagram, and predict the number of unpaired electrons for each of the follow...
- The complete reaction of 2.60 g of chromium metal with 50.00 mL of 1.200 M H2SO4 in the absence of air gave a ...
- The percent iron in iron ore can be determined by dissolving the ore in acid, then reducing the iron to Fe2+, ...
- Cobalt(III) trifluoroacetylacetonate, Co1tfac23, is a sixcoordinate, octahedral metal chelate in which three p...
- Although Cl- is a weak-field ligand and CN- is a strong field ligand, [CrCl6]3- and [Cr(CN)6]3- exhibit approx...
- The amount of paramagnetism for a first-series transition metal complex is related approximately to its spin-o...
- In octahedral complexes, the choice between high-spin and low-spin electron configurations arises only for d4 ...
- For each of the following, (i) give the systematic name of the compound and specify the oxidation state of the...
- For each of the following, (i) give the systematic name of the compound and specify the oxidation state of the...
- How many electrons will be unpaired in the complex ion [Co(OH)3]3− ?
- Predict the number of unpaired electrons in the [Cr(en)3]2+ ion.
- How many electrons will be unpaired in the complex ion [FeF6]3− ?