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In which of the following complexes the nickel metal is in highest oxidation state.
- a)Ni(CO)4
- b)[Cr(NH3)6]2[NiF 6]3
- c)[Ni(NH3)6](BF4) 2
- d)K4[Ni(CN)6]
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
In which of the following complexes the nickel metal is in highest oxi...
[Ni0(CO)4]
[Cr3+(NH3)2][Ni4+F6]3
[Ni2+(NH3)2][B+3F4]2
K4[Ni+2(CN)6]
[Cr3+(NH3)2][Ni4+F6]3
[Ni2+(NH3)2][B+3F4]2
K4[Ni+2(CN)6]
Most Upvoted Answer
In which of the following complexes the nickel metal is in highest oxi...
Introduction:
In coordination chemistry, the oxidation state of a metal ion refers to the charge that the metal ion would have if all the ligands were removed along with the electron pairs that were shared with the ligands. The oxidation state of a metal ion can range from positive to negative depending on the number of electrons it has gained or lost.
Explanation:
To determine the oxidation state of nickel in each complex, we need to consider the oxidation states of the other elements and the overall charge of the complex.
a) Ni(CO)4:
In this complex, each carbon monoxide (CO) ligand is considered neutral because carbon has an oxidation state of +2 and oxygen has an oxidation state of -2. Therefore, the overall charge of the complex is 0. Since there are no other ligands present, the oxidation state of nickel must be 0.
b) [Cr(NH3)6]2[NiF6]3:
In this complex, the oxidation state of chromium is +3 since each ammonia (NH3) ligand is neutral and the overall charge of the complex is 2+. The oxidation state of fluorine is -1. Therefore, to balance the charges, the oxidation state of nickel must be +3.
c) [Ni(NH3)6](BF4)2:
In this complex, the oxidation state of boron in the tetrafluoroborate (BF4) ion is +3, and the oxidation state of fluorine is -1. Since the overall charge of the complex is 0, the oxidation state of nickel must be +2 to balance the charges.
d) K4[Ni(CN)6]:
In this complex, the oxidation state of potassium is +1. The cyanide (CN) ligand is considered neutral, with carbon having an oxidation state of +2 and nitrogen having an oxidation state of -3. Therefore, to balance the charges, the oxidation state of nickel must be +2.
Conclusion:
Among the given complexes, the complex [Cr(NH3)6]2[NiF6]3 has the highest oxidation state of nickel, which is +3.
In coordination chemistry, the oxidation state of a metal ion refers to the charge that the metal ion would have if all the ligands were removed along with the electron pairs that were shared with the ligands. The oxidation state of a metal ion can range from positive to negative depending on the number of electrons it has gained or lost.
Explanation:
To determine the oxidation state of nickel in each complex, we need to consider the oxidation states of the other elements and the overall charge of the complex.
a) Ni(CO)4:
In this complex, each carbon monoxide (CO) ligand is considered neutral because carbon has an oxidation state of +2 and oxygen has an oxidation state of -2. Therefore, the overall charge of the complex is 0. Since there are no other ligands present, the oxidation state of nickel must be 0.
b) [Cr(NH3)6]2[NiF6]3:
In this complex, the oxidation state of chromium is +3 since each ammonia (NH3) ligand is neutral and the overall charge of the complex is 2+. The oxidation state of fluorine is -1. Therefore, to balance the charges, the oxidation state of nickel must be +3.
c) [Ni(NH3)6](BF4)2:
In this complex, the oxidation state of boron in the tetrafluoroborate (BF4) ion is +3, and the oxidation state of fluorine is -1. Since the overall charge of the complex is 0, the oxidation state of nickel must be +2 to balance the charges.
d) K4[Ni(CN)6]:
In this complex, the oxidation state of potassium is +1. The cyanide (CN) ligand is considered neutral, with carbon having an oxidation state of +2 and nitrogen having an oxidation state of -3. Therefore, to balance the charges, the oxidation state of nickel must be +2.
Conclusion:
Among the given complexes, the complex [Cr(NH3)6]2[NiF6]3 has the highest oxidation state of nickel, which is +3.
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Community Answer
In which of the following complexes the nickel metal is in highest oxi...
[Ni0(CO)4]
[Cr3+(NH3)2][Ni4+F6]3
[Ni2+(NH3)2][B+3F4]2
K4[Ni+2(CN)6]
[Cr3+(NH3)2][Ni4+F6]3
[Ni2+(NH3)2][B+3F4]2
K4[Ni+2(CN)6]
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In which of the following complexes the nickel metal is in highest oxidation state.a)Ni(CO)4b)[Cr(NH3)6]2[NiF6]3c)[Ni(NH3)6](BF4)2d)K4[Ni(CN)6]Correct answer is option 'B'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about In which of the following complexes the nickel metal is in highest oxidation state.a)Ni(CO)4b)[Cr(NH3)6]2[NiF6]3c)[Ni(NH3)6](BF4)2d)K4[Ni(CN)6]Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In which of the following complexes the nickel metal is in highest oxidation state.a)Ni(CO)4b)[Cr(NH3)6]2[NiF6]3c)[Ni(NH3)6](BF4)2d)K4[Ni(CN)6]Correct answer is option 'B'. Can you explain this answer?.
In which of the following complexes the nickel metal is in highest oxidation state.a)Ni(CO)4b)[Cr(NH3)6]2[NiF6]3c)[Ni(NH3)6](BF4)2d)K4[Ni(CN)6]Correct answer is option 'B'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about In which of the following complexes the nickel metal is in highest oxidation state.a)Ni(CO)4b)[Cr(NH3)6]2[NiF6]3c)[Ni(NH3)6](BF4)2d)K4[Ni(CN)6]Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In which of the following complexes the nickel metal is in highest oxidation state.a)Ni(CO)4b)[Cr(NH3)6]2[NiF6]3c)[Ni(NH3)6](BF4)2d)K4[Ni(CN)6]Correct answer is option 'B'. Can you explain this answer?.
Solutions for In which of the following complexes the nickel metal is in highest oxidation state.a)Ni(CO)4b)[Cr(NH3)6]2[NiF6]3c)[Ni(NH3)6](BF4)2d)K4[Ni(CN)6]Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12.
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