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Which one of the following is an outer orbital complex and exhibits paramagnetic behaviour ? [2012]
- a)[Ni(NH3)6]2+
- b)[Zn(NH3)6)]2+
- c)[Cr(NH3)6]3+
- d)[CO(NH3)6]3+
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
Which one of the following is an outer orbital complex and exhibits pa...
[Ni(NH3)6]2+
Ni2+ = 3d8, according to 
therefore, hybridisation is sp3d2 & complex is paramagnetic.
therefore, hybridisation is sp3d2 & complex is paramagnetic.Most Upvoted Answer
Which one of the following is an outer orbital complex and exhibits pa...
[Ni(NH3)6]2+ : sp3d2 (outer), octahedral, paramagnetic [Zn(NH3)6]2+ : sp3d2 (outer), octahedral, diamagnetic [Cr(NH3)6]3+ : d2sp3 (inner), octahedral, paramagnetic [Co(NH3)6]3+ : d2sp3 (inner). octahedral,
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Which one of the following is an outer orbital complex and exhibits pa...
Outer orbital complexes are those in which the metal ion utilizes its outer d orbitals for bonding. These complexes typically have a high spin configuration and exhibit paramagnetic behavior.
Let's analyze each option to determine which one fits the criteria:
a) [Ni(NH3)6]2:
- Nickel (Ni) is a transition metal with the electron configuration [Ar]3d84s2.
- In this complex, nickel is in the +2 oxidation state.
- The coordination number of nickel is 6, indicating that it forms a complex with six ammonia (NH3) ligands.
- Since nickel has four outer d electrons available, it can utilize these orbitals for bonding with the ligands.
- The complex has a high spin configuration as it maximizes the number of unpaired electrons.
- Therefore, [Ni(NH3)6]2 is an outer orbital complex and exhibits paramagnetic behavior.
b) [Zn(NH3)6]2:
- Zinc (Zn) is also a transition metal with the electron configuration [Ar]3d104s2.
- In this complex, zinc is in the +2 oxidation state.
- The coordination number of zinc is 6, indicating that it forms a complex with six ammonia (NH3) ligands.
- However, zinc has completely filled d orbitals and does not have any outer d electrons available for bonding.
- The complex has a low spin configuration with all electrons paired.
- Therefore, [Zn(NH3)6]2 is not an outer orbital complex and does not exhibit paramagnetic behavior.
c) [Cr(NH3)6]3:
- Chromium (Cr) is a transition metal with the electron configuration [Ar]3d54s1.
- In this complex, chromium is in the +3 oxidation state.
- The coordination number of chromium is 6, indicating that it forms a complex with six ammonia (NH3) ligands.
- Chromium has three outer d electrons available for bonding with the ligands.
- However, in this case, the complex has a low spin configuration as it maximizes the pairing of electrons.
- Therefore, [Cr(NH3)6]3 is not an outer orbital complex and does not exhibit paramagnetic behavior.
d) [CO(NH3)6]3:
- Carbon monoxide (CO) is not a ligand that typically forms outer orbital complexes.
- Therefore, [CO(NH3)6]3 is not an outer orbital complex and does not exhibit paramagnetic behavior.
In conclusion, the correct answer is option a) [Ni(NH3)6]2, which is an outer orbital complex and exhibits paramagnetic behavior.
Let's analyze each option to determine which one fits the criteria:
a) [Ni(NH3)6]2:
- Nickel (Ni) is a transition metal with the electron configuration [Ar]3d84s2.
- In this complex, nickel is in the +2 oxidation state.
- The coordination number of nickel is 6, indicating that it forms a complex with six ammonia (NH3) ligands.
- Since nickel has four outer d electrons available, it can utilize these orbitals for bonding with the ligands.
- The complex has a high spin configuration as it maximizes the number of unpaired electrons.
- Therefore, [Ni(NH3)6]2 is an outer orbital complex and exhibits paramagnetic behavior.
b) [Zn(NH3)6]2:
- Zinc (Zn) is also a transition metal with the electron configuration [Ar]3d104s2.
- In this complex, zinc is in the +2 oxidation state.
- The coordination number of zinc is 6, indicating that it forms a complex with six ammonia (NH3) ligands.
- However, zinc has completely filled d orbitals and does not have any outer d electrons available for bonding.
- The complex has a low spin configuration with all electrons paired.
- Therefore, [Zn(NH3)6]2 is not an outer orbital complex and does not exhibit paramagnetic behavior.
c) [Cr(NH3)6]3:
- Chromium (Cr) is a transition metal with the electron configuration [Ar]3d54s1.
- In this complex, chromium is in the +3 oxidation state.
- The coordination number of chromium is 6, indicating that it forms a complex with six ammonia (NH3) ligands.
- Chromium has three outer d electrons available for bonding with the ligands.
- However, in this case, the complex has a low spin configuration as it maximizes the pairing of electrons.
- Therefore, [Cr(NH3)6]3 is not an outer orbital complex and does not exhibit paramagnetic behavior.
d) [CO(NH3)6]3:
- Carbon monoxide (CO) is not a ligand that typically forms outer orbital complexes.
- Therefore, [CO(NH3)6]3 is not an outer orbital complex and does not exhibit paramagnetic behavior.
In conclusion, the correct answer is option a) [Ni(NH3)6]2, which is an outer orbital complex and exhibits paramagnetic behavior.
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Which one of the following is an outer orbital complex and exhibits paramagnetic behaviour ? [2012]a)[Ni(NH3)6]2+b)[Zn(NH3)6)]2+c)[Cr(NH3)6]3+d)[CO(NH3)6]3+Correct answer is option 'A'. Can you explain this answer?
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Which one of the following is an outer orbital complex and exhibits paramagnetic behaviour ? [2012]a)[Ni(NH3)6]2+b)[Zn(NH3)6)]2+c)[Cr(NH3)6]3+d)[CO(NH3)6]3+Correct answer is option 'A'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Which one of the following is an outer orbital complex and exhibits paramagnetic behaviour ? [2012]a)[Ni(NH3)6]2+b)[Zn(NH3)6)]2+c)[Cr(NH3)6]3+d)[CO(NH3)6]3+Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which one of the following is an outer orbital complex and exhibits paramagnetic behaviour ? [2012]a)[Ni(NH3)6]2+b)[Zn(NH3)6)]2+c)[Cr(NH3)6]3+d)[CO(NH3)6]3+Correct answer is option 'A'. Can you explain this answer?.
Which one of the following is an outer orbital complex and exhibits paramagnetic behaviour ? [2012]a)[Ni(NH3)6]2+b)[Zn(NH3)6)]2+c)[Cr(NH3)6]3+d)[CO(NH3)6]3+Correct answer is option 'A'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Which one of the following is an outer orbital complex and exhibits paramagnetic behaviour ? [2012]a)[Ni(NH3)6]2+b)[Zn(NH3)6)]2+c)[Cr(NH3)6]3+d)[CO(NH3)6]3+Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which one of the following is an outer orbital complex and exhibits paramagnetic behaviour ? [2012]a)[Ni(NH3)6]2+b)[Zn(NH3)6)]2+c)[Cr(NH3)6]3+d)[CO(NH3)6]3+Correct answer is option 'A'. Can you explain this answer?.
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