The hybridization involved in the complex NiCN42-is 
(Atomic number of Ni=28)

1. dsp2

2. sp3

3. d2sp2

4. d2sp3

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An ion, among the following, that has magnetic moment of 2.84 BM is 
(At. no. Ni = 28, Ti = 22, Cr = 24, Co = 27)

1. Ni2+
2. Ti3+
3. Cr2+
4. Co2+

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The correct statement, among the following, is:

1. [Co(CN)6]3- has no unpaired electrons and will be in a low-spin configuration.

2. [Co(CN)6]3- has four unpaired electrons and will be in a low-spin configuration.

3. [Co(CN)6]3- has four unpaired electrons and will be in a high-spin configuration.

4. [Co(CN)6]3- has no unpaired electrons and will be in a high-spin configuration.

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Among the following complexes the one which shows zero crystal field stabilization energy (CFSE) is

1. [Ni(H2O)6]3+

2. [Fe(H2O)6]3+

3. [Co(H2O)6]2+

4. [Co(H2O)6]3+

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An ion that has magnetic moment 2.83 BM is - 

 
(Atomic Number: Ti=22, Cr=24, Mn=25, Ni=28)

1. Ti3+

2. Ni2+

3. Cr3+

4. Mn2+

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A magnetic moment of 1.73 BM will be shown by which one of the following:
1. [Ni(CN)4]2–
2. TiCl4
3. [CoCl6]4–
4. [Cu(NH3)4]2+
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Which one of the following is an outer orbital complex and exhibits paramagnetic behavior?

1. [Ni(NH3)6]2+

2. [Zn(NH3)6]2+

3. [Cr(NH3)6]3+

4. [Co(NH3)6]3+

Subtopic:  VBT, CFT & their Limitations |
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Low spin complex of d6-cation in an octahedral field will have the following energy :

1.   -1250+3P

2.  -250+2P

3.  -250+P

4.  -1250+P

(0 = Crystal field splitting energy in an octahedral field, P = Electron pairing energy)

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The d-electron configurations of Cr2+, Mn2+, Fe2+ and Co2+ are d4, d5, d6, and d7 respectively. Minimum paramagnetic behavior is shown by:
(At. No C = 24, Mn = 25, Fe = 26, Co = 27)

1. [Fe(H2O)6]2+

2. [Co(H2O)6]2+

3. [Cr(H2O)6]2+

4. [Mn(H2O)6]2+

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Of the following complex ions, which is diamagnetic in nature?

1.  NiCN42-

2.  CuCl42-

3.  CoF63-

4.  NiCl42-

Subtopic:  VBT, CFT & their Limitations |
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