The magnetic moment of the complex K3[CoF6] is 5.0 μB . The total stabilization energy will be

Solved problems, 

The magnetic moment of the complex K3[CoF6] is 5.0 μB . The total stabilization energy will be:

a)-0.4 Δ0

b)-0.4 Δ0 + P

c)-2.4 Δ0 + 3P

d)-1.8 Δ0 + 3P

Correct answer is option 'A'

The magnetic moment of the complex K3[CoF6] is 5.0 μB . The total...

Magnetic moment of K3[CoF6]

- The magnetic moment of the complex K3[CoF6] is 5.0 B.

Stabilization energy

- The stabilization energy is the energy released during the formation of a complex from its constituent ions.

- The greater the stabilization energy, the more stable the complex.

- The stabilization energy can be calculated using the crystal field theory.

Crystal field theory

- According to the crystal field theory, the metal ion in a complex is surrounded by a set of negatively charged ligands.

- The ligands repel the electrons in the metal ion, causing the energy levels to split.

- The magnitude of the splitting depends on the nature of the ligands and the geometry of the complex.

- The energy difference between the highest and lowest energy levels determines the magnetic properties of the complex.

- The magnetic moment of the complex is related to the number of unpaired electrons in the highest energy level.

Calculation of stabilization energy

- The stabilization energy can be calculated using the following equation:

ΔE = -0.4Bn(unpaired)

where ΔE is the stabilization energy, B is the crystal field splitting energy, n is the number of ligands, and unpaired is the number of unpaired electrons in the highest energy level.

- In this case, the complex has a magnetic moment of 5.0 B, which indicates the presence of one unpaired electron in the highest energy level.

- Therefore, unpaired = 1 and n = 6 (since there are six ligands in the complex).

- The crystal field splitting energy for octahedral complexes with strong field ligands is 0.4 Δo, where Δo is the crystal field splitting parameter.

- For Co(III), Δo is approximately 10,000 cm-1.

- Therefore, B = 0.4 x 10,000 = 4000 cm-1.

- Substituting these values into the equation, we get:

ΔE = -0.4 x 4000 x 1 x 6 = -9600 cm-1 = -0.96 eV.

Conclusion

- The total stabilization energy of the complex K3[CoF6] is -0.96 eV or -9600 cm-1.

- The correct answer is option 'A'.

Answer

The magnetic moment of the complex K3[CoF6] is 5.0 μB . The total...

As magnatic moment suggest it is 4 electron paramagnetic and d6 system so CFSE = .4 ∆o and no extra pairing occur

Given that the expected spin- only magnetic moment for (Et4N)2[NiCl4] is 2.83 B, the total number of unpaired electrons in this complex is _______ Correct answer is '2'. Can you explain this answer?

The magnetic moment of the complex K3[CoF6] is 5.0 B.M.Calculate the total CFSE.?

The zero magnetic moment of octahedral K2NiF6 is due to

A complex [Co(h2O)6]2+has an absorption maxima at 510 nm. The crystal field stabilisation energy for [CoC14]2-(in KJ mol-1) is _______________(Ignoring stabilisation charg e) Correct answer is between '125,127'. Can you explain this answer?

The magnitude of crystal field stabilization energy (CFSE) of octahedral [Ti(H2O)6]3 complex is 7680 cm−1. The wavelength at the maximum absorption (max) of this complex is?

The magnetic moment of the complex K3[CoF6] is 5.0 μB . The total stabilization energy will be:a)-0.4 Δ0b)-0.4 Δ0 + Pc)-2.4 Δ0 + 3Pd)-1.8 Δ0 + 3PCorrect answer is option 'A'. Can you explain this answer?

Sure! Let's go through each question one by one:

1. Given that the expected spin-only magnetic moment for (Et4N)2[NiCl4] is 2.83 B, the total number of unpaired electrons in this complex is 2. The spin-only magnetic moment is determined by the number of unpaired electrons in the system. In this case, the expected value of 2.83 B indicates the presence of two unpaired electrons in the highest energy level.

2. The magnetic moment of the complex K3[CoF6] is 5.0 B. To calculate the total crystal field stabilization energy (CFSE), we need to consider the number of unpaired electrons in the highest energy level. In this case, a magnetic moment of 5.0 B suggests the presence of one unpaired electron. For a d6 system, the CFSE is equal to 0.4 Δo, where Δo is the crystal field splitting parameter. So, the total CFSE in this case would be 0.4 Δo.

3. The zero magnetic moment of octahedral K2NiF6 is due to the presence of paired electrons in the d orbitals. In this compound, the Ni(II) ion has a d8 electron configuration. Due to the pairing of electrons, the magnetic moments of the individual electrons cancel each other out, resulting in a net magnetic moment of zero.

4. The absorption maximum (λmax) of [Co(H2O)6]2+ complex at 510 nm can provide information about the crystal field stabilization energy (CFSE). However, without specific data or additional information, it is not possible to calculate the exact value of CFSE for [CoCl4]2-. The correct answer falling between 125 and 127 kJ/mol indicates that the CFSE value should be within that range based on experimental observations or calculations.

5. To determine the wavelength at the maximum absorption (λmax) for the octahedral [Ti(H2O)6]3+ complex with a given CFSE value of 7680 cm-1, we need to utilize the relationship between CFSE and λmax. The energy (E) of the absorbed light is inversely proportional to the wavelength (λ). Therefore, we can use the equation E = hc/λ, where h is Planck's constant and c is the speed of light. By converting the CFSE value to energy (E) using E = CFSE x Avogadro's constant, we can then calculate the wavelength (λ) using the equation λ = hc/E.

I hope this explanation helps clarify the answers to the given questions. If you have any further inquiries, please let me know in the comments section.