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Consider the following with respect to lanthanides
I. The basic strength of hydroxides of lanthanides increases from La(OH)3 to Lu(OH)3
II. The lanthanide ions Lu3+, Yb2+ and Ce4+ are diamagnetic Which of the following statement(s) given above is/are correct ?
I. The basic strength of hydroxides of lanthanides increases from La(OH)3 to Lu(OH)3
II. The lanthanide ions Lu3+, Yb2+ and Ce4+ are diamagnetic Which of the following statement(s) given above is/are correct ?
- a)I only
- b)II only
- c)Both I and II
- d)Neither I nor II
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
Consider the following with respect to lanthanidesI. The basic strengt...
Lanthanides are a series of chemical elements in the periodic table, specifically elements with atomic numbers 57 to 71. They are also known as the rare earth elements. In this question, we are given two statements about lanthanides and we need to determine which one is correct.
Statement I: The basic strength of hydroxides of lanthanides increases from La(OH)3 to Lu(OH)3.
This statement is incorrect. The basic strength of hydroxides generally increases as we move down a group in the periodic table. So, if we compare La(OH)3 with Lu(OH)3, we would expect Lu(OH)3 to be more basic. However, in reality, the basic strength of hydroxides of lanthanides does not show a consistent trend from La(OH)3 to Lu(OH)3. This is because the lanthanides have complex electronic configurations and the basicity is influenced by factors such as the size and charge of the ions. Therefore, Statement I is incorrect.
Statement II: The lanthanide ions Lu3, Yb2, and Ce4 are diamagnetic.
This statement is correct. Diamagnetic substances are those that do not have any unpaired electrons and are not attracted to a magnetic field. In the lanthanide series, Lu3+, Yb2+, and Ce4+ ions all have completely filled f-orbitals, which means they do not have any unpaired electrons. Therefore, these ions are diamagnetic. This is in contrast to other lanthanide ions that have unpaired electrons and are paramagnetic. Therefore, Statement II is correct.
In conclusion, only Statement II is correct. The basic strength of hydroxides of lanthanides does not follow a consistent trend from La(OH)3 to Lu(OH)3, but the lanthanide ions Lu3+, Yb2+, and Ce4+ are indeed diamagnetic.
Statement I: The basic strength of hydroxides of lanthanides increases from La(OH)3 to Lu(OH)3.
This statement is incorrect. The basic strength of hydroxides generally increases as we move down a group in the periodic table. So, if we compare La(OH)3 with Lu(OH)3, we would expect Lu(OH)3 to be more basic. However, in reality, the basic strength of hydroxides of lanthanides does not show a consistent trend from La(OH)3 to Lu(OH)3. This is because the lanthanides have complex electronic configurations and the basicity is influenced by factors such as the size and charge of the ions. Therefore, Statement I is incorrect.
Statement II: The lanthanide ions Lu3, Yb2, and Ce4 are diamagnetic.
This statement is correct. Diamagnetic substances are those that do not have any unpaired electrons and are not attracted to a magnetic field. In the lanthanide series, Lu3+, Yb2+, and Ce4+ ions all have completely filled f-orbitals, which means they do not have any unpaired electrons. Therefore, these ions are diamagnetic. This is in contrast to other lanthanide ions that have unpaired electrons and are paramagnetic. Therefore, Statement II is correct.
In conclusion, only Statement II is correct. The basic strength of hydroxides of lanthanides does not follow a consistent trend from La(OH)3 to Lu(OH)3, but the lanthanide ions Lu3+, Yb2+, and Ce4+ are indeed diamagnetic.
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Consider the following with respect to lanthanidesI. The basic strengt...
Ya it's B...Explanation:-Basic strength of hydroxide of lanthanide decreases from La to Lu...In lanthanide which have no any unpaired electrons is Diamagnetic.....so, by the electronic configuration we can say statement is true...
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Consider the following with respect to lanthanidesI. The basic strength of hydroxides of lanthanides increases from La(OH)3 to Lu(OH)3II. The lanthanide ions Lu3+, Yb2+ and Ce4+ are diamagnetic Which of the following statement(s) given above is/are correct ?a)I onlyb)II onlyc)Both I and IId)Neither I nor IICorrect answer is option 'B'. Can you explain this answer?
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Consider the following with respect to lanthanidesI. The basic strength of hydroxides of lanthanides increases from La(OH)3 to Lu(OH)3II. The lanthanide ions Lu3+, Yb2+ and Ce4+ are diamagnetic Which of the following statement(s) given above is/are correct ?a)I onlyb)II onlyc)Both I and IId)Neither I nor IICorrect answer is option 'B'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Consider the following with respect to lanthanidesI. The basic strength of hydroxides of lanthanides increases from La(OH)3 to Lu(OH)3II. The lanthanide ions Lu3+, Yb2+ and Ce4+ are diamagnetic Which of the following statement(s) given above is/are correct ?a)I onlyb)II onlyc)Both I and IId)Neither I nor IICorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following with respect to lanthanidesI. The basic strength of hydroxides of lanthanides increases from La(OH)3 to Lu(OH)3II. The lanthanide ions Lu3+, Yb2+ and Ce4+ are diamagnetic Which of the following statement(s) given above is/are correct ?a)I onlyb)II onlyc)Both I and IId)Neither I nor IICorrect answer is option 'B'. Can you explain this answer?.
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