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Which one of the following ions has electronic configuration [Ar] 3d6 ? [2010]
(At. Nos. Mn = 25, Fe = 26, Co = 27, Ni = 28)
- a)Ni3+
- b)Mn3+
- c)Fe3+
- d)Co3+
Correct answer is option 'D'. Can you explain this answer?
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Which one of the following ions has electronic configuration [Ar] 3d6 ...
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Which one of the following ions has electronic configuration [Ar] 3d6 ...
Explanation:
The given electronic configuration is [Ar] 3d6.
We need to find the ion which has this electronic configuration.
The electronic configuration of neutral atoms of Mn, Fe, Co, and Ni are:
Mn: [Ar] 3d5 4s2
Fe: [Ar] 3d6 4s2
Co: [Ar] 3d7 4s2
Ni: [Ar] 3d8 4s2
To form an ion, an atom loses or gains electrons to achieve a noble gas configuration.
For the given electronic configuration [Ar] 3d6, the atom has lost two electrons from the 4s orbital to achieve a noble gas configuration of [Ar].
So, the ion with the given electronic configuration has a charge of +2.
The ions of Mn, Fe, Co, and Ni with a +2 charge have the following electronic configurations:
Mn2+: [Ar] 3d5
Fe2+: [Ar] 3d6
Co2+: [Ar] 3d7
Ni2+: [Ar] 3d8
Thus, the only ion with the given electronic configuration of [Ar] 3d6 is Co2+, which is the ion of cobalt with a +2 charge.
Therefore, option D (Co3+) is the correct answer.
The given electronic configuration is [Ar] 3d6.
We need to find the ion which has this electronic configuration.
The electronic configuration of neutral atoms of Mn, Fe, Co, and Ni are:
Mn: [Ar] 3d5 4s2
Fe: [Ar] 3d6 4s2
Co: [Ar] 3d7 4s2
Ni: [Ar] 3d8 4s2
To form an ion, an atom loses or gains electrons to achieve a noble gas configuration.
For the given electronic configuration [Ar] 3d6, the atom has lost two electrons from the 4s orbital to achieve a noble gas configuration of [Ar].
So, the ion with the given electronic configuration has a charge of +2.
The ions of Mn, Fe, Co, and Ni with a +2 charge have the following electronic configurations:
Mn2+: [Ar] 3d5
Fe2+: [Ar] 3d6
Co2+: [Ar] 3d7
Ni2+: [Ar] 3d8
Thus, the only ion with the given electronic configuration of [Ar] 3d6 is Co2+, which is the ion of cobalt with a +2 charge.
Therefore, option D (Co3+) is the correct answer.
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Which one of the following ions has electronic configuration [Ar] 3d6 ...
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Which one of the following ions has electronic configuration [Ar] 3d6 ? [2010](At. Nos. Mn = 25, Fe = 26, Co = 27, Ni = 28)a)Ni3+b)Mn3+c)Fe3+d)Co3+Correct 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 Which one of the following ions has electronic configuration [Ar] 3d6 ? [2010](At. Nos. Mn = 25, Fe = 26, Co = 27, Ni = 28)a)Ni3+b)Mn3+c)Fe3+d)Co3+Correct 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 Which one of the following ions has electronic configuration [Ar] 3d6 ? [2010](At. Nos. Mn = 25, Fe = 26, Co = 27, Ni = 28)a)Ni3+b)Mn3+c)Fe3+d)Co3+Correct answer is option 'D'. Can you explain this answer?.
Which one of the following ions has electronic configuration [Ar] 3d6 ? [2010](At. Nos. Mn = 25, Fe = 26, Co = 27, Ni = 28)a)Ni3+b)Mn3+c)Fe3+d)Co3+Correct 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 Which one of the following ions has electronic configuration [Ar] 3d6 ? [2010](At. Nos. Mn = 25, Fe = 26, Co = 27, Ni = 28)a)Ni3+b)Mn3+c)Fe3+d)Co3+Correct 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 Which one of the following ions has electronic configuration [Ar] 3d6 ? [2010](At. Nos. Mn = 25, Fe = 26, Co = 27, Ni = 28)a)Ni3+b)Mn3+c)Fe3+d)Co3+Correct answer is option 'D'. Can you explain this answer?.
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Which one of the following ions has electronic configuration [Ar] 3d6 ? [2010](At. Nos. Mn = 25, Fe = 26, Co = 27, Ni = 28)a)Ni3+b)Mn3+c)Fe3+d)Co3+Correct answer is option 'D'. Can you explain this answer?, a detailed solution for Which one of the following ions has electronic configuration [Ar] 3d6 ? [2010](At. Nos. Mn = 25, Fe = 26, Co = 27, Ni = 28)a)Ni3+b)Mn3+c)Fe3+d)Co3+Correct answer is option 'D'. Can you explain this answer? has been provided alongside types of Which one of the following ions has electronic configuration [Ar] 3d6 ? [2010](At. Nos. Mn = 25, Fe = 26, Co = 27, Ni = 28)a)Ni3+b)Mn3+c)Fe3+d)Co3+Correct answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
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