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In which of the following oxidation state Cerium achieves the noble gas configuration?
- a)+5
- b)+2
- c)+7
- d)+4
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
In which of the following oxidation state Cerium achieves the noble ga...
The reason for this behaviour is a result of the stability of half filled, empty or fulfilled F orbitals that these elements achieve in these Oxidation State.Thats it.
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In which of the following oxidation state Cerium achieves the noble ga...
To determine the oxidation state in which Cerium achieves the noble gas configuration, we need to understand the electronic configuration of Cerium and its tendency to gain or lose electrons.
Electronic Configuration of Cerium:
The atomic number of Cerium is 58, which means it has 58 electrons. The electron configuration of Cerium can be written as [Xe]4f^15d^16s^2, where [Xe] represents the noble gas configuration of Xenon.
Noble Gas Configuration:
The noble gas configuration refers to the electron configuration of the nearest noble gas element. In the case of Cerium, the nearest noble gas is Xenon, which has an electron configuration of [Xe]6s^24f^145d^10.
Determining the Oxidation State:
To achieve noble gas configuration, Cerium will either lose or gain electrons to match the electron configuration of Xenon.
Cerium can lose electrons from its outermost shell, which is the 6s orbital, or gain electrons to fill its 5d and 4f orbitals.
Given the options, we can analyze each oxidation state:
a) Oxidation state of 5:
If Cerium has an oxidation state of +5, it would lose all the electrons from its 6s and 4f orbitals. The resulting electron configuration would be [Xe]4f^0, which does not match the noble gas configuration of Xenon. Therefore, option (a) is incorrect.
b) Oxidation state of 2:
If Cerium has an oxidation state of +2, it would lose only the two electrons from its 6s orbital. The resulting electron configuration would be [Xe]4f^15d^0, which does not match the noble gas configuration of Xenon. Therefore, option (b) is incorrect.
c) Oxidation state of 7:
If Cerium has an oxidation state of +7, it would gain electrons to fill its 5d and 4f orbitals. The resulting electron configuration would be [Xe]4f^26s^25d^1, which does not match the noble gas configuration of Xenon. Therefore, option (c) is incorrect.
d) Oxidation state of 4:
If Cerium has an oxidation state of +4, it would lose all the electrons from its 6s orbital and one electron from its 4f orbital. The resulting electron configuration would be [Xe]4f^05d^0, which matches the noble gas configuration of Xenon. Therefore, option (d) is correct.
Therefore, Cerium achieves the noble gas configuration in its +4 oxidation state.
Electronic Configuration of Cerium:
The atomic number of Cerium is 58, which means it has 58 electrons. The electron configuration of Cerium can be written as [Xe]4f^15d^16s^2, where [Xe] represents the noble gas configuration of Xenon.
Noble Gas Configuration:
The noble gas configuration refers to the electron configuration of the nearest noble gas element. In the case of Cerium, the nearest noble gas is Xenon, which has an electron configuration of [Xe]6s^24f^145d^10.
Determining the Oxidation State:
To achieve noble gas configuration, Cerium will either lose or gain electrons to match the electron configuration of Xenon.
Cerium can lose electrons from its outermost shell, which is the 6s orbital, or gain electrons to fill its 5d and 4f orbitals.
Given the options, we can analyze each oxidation state:
a) Oxidation state of 5:
If Cerium has an oxidation state of +5, it would lose all the electrons from its 6s and 4f orbitals. The resulting electron configuration would be [Xe]4f^0, which does not match the noble gas configuration of Xenon. Therefore, option (a) is incorrect.
b) Oxidation state of 2:
If Cerium has an oxidation state of +2, it would lose only the two electrons from its 6s orbital. The resulting electron configuration would be [Xe]4f^15d^0, which does not match the noble gas configuration of Xenon. Therefore, option (b) is incorrect.
c) Oxidation state of 7:
If Cerium has an oxidation state of +7, it would gain electrons to fill its 5d and 4f orbitals. The resulting electron configuration would be [Xe]4f^26s^25d^1, which does not match the noble gas configuration of Xenon. Therefore, option (c) is incorrect.
d) Oxidation state of 4:
If Cerium has an oxidation state of +4, it would lose all the electrons from its 6s orbital and one electron from its 4f orbital. The resulting electron configuration would be [Xe]4f^05d^0, which matches the noble gas configuration of Xenon. Therefore, option (d) is correct.
Therefore, Cerium achieves the noble gas configuration in its +4 oxidation state.
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In which of the following oxidation state Cerium achieves the noble gas configuration?a)+5b)+2c)+7d)+4Correct answer is option 'D'. 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 oxidation state Cerium achieves the noble gas configuration?a)+5b)+2c)+7d)+4Correct answer is option 'D'. 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 oxidation state Cerium achieves the noble gas configuration?a)+5b)+2c)+7d)+4Correct answer is option 'D'. Can you explain this answer?.
In which of the following oxidation state Cerium achieves the noble gas configuration?a)+5b)+2c)+7d)+4Correct answer is option 'D'. 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 oxidation state Cerium achieves the noble gas configuration?a)+5b)+2c)+7d)+4Correct answer is option 'D'. 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 oxidation state Cerium achieves the noble gas configuration?a)+5b)+2c)+7d)+4Correct answer is option 'D'. Can you explain this answer?.
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