Question:
Which of the following is a wrong statement?
Which of the following is a wrong statement?
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In Ni(CO)\(_4\), Ni has an oxidation state of 0, as CO is a neutral ligand.
Updated On: Apr 22, 2026
- Ni(CO)\(_4\) has zero oxidation number for Ni
- Ni(CO)\(_4\) has oxidation number +4 for Ni
- Ni(CO)\(_4\) is metal
- CO is gas
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the oxidation state of Ni in Ni(CO)\(_4\).
In Ni(CO)\(_4\), nickel has an oxidation number of 0 because carbon monoxide (CO) is a neutral ligand and does not affect the oxidation state of the metal.
Step 2: Explanation of the options.
- (1) Ni(CO)\(_4\) has zero oxidation number for Ni: This is correct because Ni in Ni(CO)\(_4\) has oxidation state 0.
- (2) Ni(CO)\(_4\) has oxidation number +4 for Ni: This is incorrect. Ni has oxidation state 0, not +4, in this complex.
- (3) Ni(CO)\(_4\) is metal: This is correct as Ni is the central metal in the complex.
- (4) CO is gas: This is correct. CO is a gas at room temperature.
Step 3: Conclusion.
The correct answer is (2) Ni(CO)\(_4\) has oxidation number +4 for Ni.
In Ni(CO)\(_4\), nickel has an oxidation number of 0 because carbon monoxide (CO) is a neutral ligand and does not affect the oxidation state of the metal.
Step 2: Explanation of the options.
- (1) Ni(CO)\(_4\) has zero oxidation number for Ni: This is correct because Ni in Ni(CO)\(_4\) has oxidation state 0.
- (2) Ni(CO)\(_4\) has oxidation number +4 for Ni: This is incorrect. Ni has oxidation state 0, not +4, in this complex.
- (3) Ni(CO)\(_4\) is metal: This is correct as Ni is the central metal in the complex.
- (4) CO is gas: This is correct. CO is a gas at room temperature.
Step 3: Conclusion.
The correct answer is (2) Ni(CO)\(_4\) has oxidation number +4 for Ni.
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