Chemistry Exam > Chemistry Questions > Consider the ions Eu(III), Gd(III), Sm(III) a...
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Consider the ions Eu(III), Gd(III), Sm(III) and Lu(III). The observed and calculated magnetic moment values are closest for the pair:
- a)Gd(III), Lu(III)
- b)Eu(III), Lu(III)
- c)Sm(III), Gd(III)
- d)Sm(III), Eu(III)
Correct answer is option 'A'. Can you explain this answer?
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Consider the ions Eu(III), Gd(III), Sm(III) and Lu(III). The observed ...
Explanation:
Magnetic Moment:
Magnetic moment is the measure of the strength of a magnetic field. It is the net magnetic dipole moment per unit volume of a material. It gives us an idea about the magnetic properties of a substance.
Observation:
The observed and calculated magnetic moment values are closest for the pair Gd(III) and Lu(III).
Reasoning:
The magnetic moment of a substance is dependent on the number of unpaired electrons present in it. The presence of unpaired electrons in the outermost shell of an atom leads to the generation of a magnetic field. Therefore, the magnetic moment of an atom can be calculated by adding the magnetic moments of all the unpaired electrons present in it.
The electronic configuration of Eu(III), Gd(III), Sm(III) and Lu(III) are as follows:
Eu(III) - [Xe] 4f6 6s2
Gd(III) - [Xe] 4f7 5d1 6s2
Sm(III) - [Xe] 4f6 6s2
Lu(III) - [Xe] 4f14 5d1 6s2
All the four ions have unpaired electrons in their 4f subshell except for Lu(III) which has a filled 4f subshell. Hence, Lu(III) does not have any unpaired electrons and its magnetic moment is zero.
The observed magnetic moment values of the ions in the decreasing order are Gd(III) > Sm(III) > Eu(III) > Lu(III).
The calculated magnetic moment values of the ions in the decreasing order are Gd(III) > Sm(III) > Eu(III) > Lu(III).
The closest observed and calculated magnetic moment values are for Gd(III) and Lu(III) as their calculated and observed magnetic moments are the same.
Therefore, the correct pair is Gd(III) and Lu(III).
Magnetic Moment:
Magnetic moment is the measure of the strength of a magnetic field. It is the net magnetic dipole moment per unit volume of a material. It gives us an idea about the magnetic properties of a substance.
Observation:
The observed and calculated magnetic moment values are closest for the pair Gd(III) and Lu(III).
Reasoning:
The magnetic moment of a substance is dependent on the number of unpaired electrons present in it. The presence of unpaired electrons in the outermost shell of an atom leads to the generation of a magnetic field. Therefore, the magnetic moment of an atom can be calculated by adding the magnetic moments of all the unpaired electrons present in it.
The electronic configuration of Eu(III), Gd(III), Sm(III) and Lu(III) are as follows:
Eu(III) - [Xe] 4f6 6s2
Gd(III) - [Xe] 4f7 5d1 6s2
Sm(III) - [Xe] 4f6 6s2
Lu(III) - [Xe] 4f14 5d1 6s2
All the four ions have unpaired electrons in their 4f subshell except for Lu(III) which has a filled 4f subshell. Hence, Lu(III) does not have any unpaired electrons and its magnetic moment is zero.
The observed magnetic moment values of the ions in the decreasing order are Gd(III) > Sm(III) > Eu(III) > Lu(III).
The calculated magnetic moment values of the ions in the decreasing order are Gd(III) > Sm(III) > Eu(III) > Lu(III).
The closest observed and calculated magnetic moment values are for Gd(III) and Lu(III) as their calculated and observed magnetic moments are the same.
Therefore, the correct pair is Gd(III) and Lu(III).
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Community Answer
Consider the ions Eu(III), Gd(III), Sm(III) and Lu(III). The observed ...
In case of Gd(lll) and Lu(lll), strong L and S coupling occurs , therefore, their expected and calculated magnetic moment Congress out to be same.
But in case of other two, L and S coupling doesn't occurs, that's why didn't magnetic moment is observed that calculated.
But in case of other two, L and S coupling doesn't occurs, that's why didn't magnetic moment is observed that calculated.
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Consider the ions Eu(III), Gd(III), Sm(III) and Lu(III). The observed and calculated magnetic moment values are closest for the pair:a)Gd(III), Lu(III)b)Eu(III), Lu(III)c)Sm(III), Gd(III)d)Sm(III), Eu(III)Correct answer is option 'A'. Can you explain this answer?
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Consider the ions Eu(III), Gd(III), Sm(III) and Lu(III). The observed and calculated magnetic moment values are closest for the pair:a)Gd(III), Lu(III)b)Eu(III), Lu(III)c)Sm(III), Gd(III)d)Sm(III), Eu(III)Correct answer is option 'A'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about Consider the ions Eu(III), Gd(III), Sm(III) and Lu(III). The observed and calculated magnetic moment values are closest for the pair:a)Gd(III), Lu(III)b)Eu(III), Lu(III)c)Sm(III), Gd(III)d)Sm(III), Eu(III)Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the ions Eu(III), Gd(III), Sm(III) and Lu(III). The observed and calculated magnetic moment values are closest for the pair:a)Gd(III), Lu(III)b)Eu(III), Lu(III)c)Sm(III), Gd(III)d)Sm(III), Eu(III)Correct answer is option 'A'. Can you explain this answer?.
Consider the ions Eu(III), Gd(III), Sm(III) and Lu(III). The observed and calculated magnetic moment values are closest for the pair:a)Gd(III), Lu(III)b)Eu(III), Lu(III)c)Sm(III), Gd(III)d)Sm(III), Eu(III)Correct answer is option 'A'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about Consider the ions Eu(III), Gd(III), Sm(III) and Lu(III). The observed and calculated magnetic moment values are closest for the pair:a)Gd(III), Lu(III)b)Eu(III), Lu(III)c)Sm(III), Gd(III)d)Sm(III), Eu(III)Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the ions Eu(III), Gd(III), Sm(III) and Lu(III). The observed and calculated magnetic moment values are closest for the pair:a)Gd(III), Lu(III)b)Eu(III), Lu(III)c)Sm(III), Gd(III)d)Sm(III), Eu(III)Correct answer is option 'A'. Can you explain this answer?.
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