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Identify the incorrect statement among the following:
- a)Lanthanoid contraction is the accumulation of successive shrinkages.
- b)As a result of lanthanoid contraction, the properties of 4d series of the transition elements have no similarities with the 5d series of elements.
- c)Shielding power of 4f electrons is quite weak.
- d)There is a decrease in the radii of the atoms or ions as one proceeds from La to Lu.
Correct answer is option 'B'. Can you explain this answer?
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Identify the incorrect statement among the following:a)Lanthanoid con...
Lanthanoid Contraction and Similarities in 4d and 5d series of Transition Elements
The incorrect statement among the given options is:
Option B: As a result of lanthanoid contraction, the properties of the 4d series of the transition elements have no similarities with the 5d series of elements.
Explanation:
1. Lanthanoid Contraction:
Lanthanoid contraction refers to the decrease in size or atomic radii of the elements as we move from La (lanthanum) to Lu (lutetium) in the lanthanide series. This contraction occurs because of the poor shielding ability of the 4f electrons, which leads to an increase in effective nuclear charge experienced by the outermost electrons. As a result, there is a progressive decrease in atomic and ionic radii.
2. Similarities in 4d and 5d Transition Elements:
The 4d and 5d transition elements exhibit similarities in their chemical properties due to the similar electronic configurations of their outermost shells. The 4d series includes elements from Sc (scandium) to Zn (zinc), while the 5d series includes elements from Y (yttrium) to Cd (cadmium).
3. Lanthanoid Contraction and Similarities:
Contrary to the incorrect statement in option B, the lanthanoid contraction does have an impact on the properties of the 4d and 5d series. The lanthanoid contraction affects the size and electron configuration of the elements in the 4d series, making them similar to the corresponding elements in the 5d series. This similarity arises because the lanthanoid contraction reduces the size difference between the 4d and 5d series, thereby leading to comparable chemical properties.
4. Consequences of Lanthanoid Contraction:
The consequences of lanthanoid contraction include:
- Similar chemical properties between the corresponding elements of the 4d and 5d series.
- Similar trends in atomic and ionic radii within the 4d and 5d series.
- Similar trends in ionization enthalpy, electronegativity, and other properties within the 4d and 5d series.
Therefore, the correct statement is that the properties of the 4d series of the transition elements do show similarities with the 5d series of elements as a result of the lanthanoid contraction.
The incorrect statement among the given options is:
Option B: As a result of lanthanoid contraction, the properties of the 4d series of the transition elements have no similarities with the 5d series of elements.
Explanation:
1. Lanthanoid Contraction:
Lanthanoid contraction refers to the decrease in size or atomic radii of the elements as we move from La (lanthanum) to Lu (lutetium) in the lanthanide series. This contraction occurs because of the poor shielding ability of the 4f electrons, which leads to an increase in effective nuclear charge experienced by the outermost electrons. As a result, there is a progressive decrease in atomic and ionic radii.
2. Similarities in 4d and 5d Transition Elements:
The 4d and 5d transition elements exhibit similarities in their chemical properties due to the similar electronic configurations of their outermost shells. The 4d series includes elements from Sc (scandium) to Zn (zinc), while the 5d series includes elements from Y (yttrium) to Cd (cadmium).
3. Lanthanoid Contraction and Similarities:
Contrary to the incorrect statement in option B, the lanthanoid contraction does have an impact on the properties of the 4d and 5d series. The lanthanoid contraction affects the size and electron configuration of the elements in the 4d series, making them similar to the corresponding elements in the 5d series. This similarity arises because the lanthanoid contraction reduces the size difference between the 4d and 5d series, thereby leading to comparable chemical properties.
4. Consequences of Lanthanoid Contraction:
The consequences of lanthanoid contraction include:
- Similar chemical properties between the corresponding elements of the 4d and 5d series.
- Similar trends in atomic and ionic radii within the 4d and 5d series.
- Similar trends in ionization enthalpy, electronegativity, and other properties within the 4d and 5d series.
Therefore, the correct statement is that the properties of the 4d series of the transition elements do show similarities with the 5d series of elements as a result of the lanthanoid contraction.
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Identify the incorrect statement among the following:a)Lanthanoid con...
In each vertical column of transition elements, the elements of second and third transition series resemble each other more closely than the elements of first and secondtransition series on account of lanthanide contraction. Hence the properties of elements of 4d series of the transition elements resemble with the properties of the elements of 5d series of the transition elements.
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Identify the incorrect statement among the following:a)Lanthanoid contraction is the accumulation of successive shrinkages.b)As a result of lanthanoid contraction, the properties of 4d series of the transition elements have no similarities with the 5d series of elements.c)Shielding power of 4f electrons is quite weak.d)There is a decrease in the radii of the atoms or ions as one proceeds from La to Lu.Correct answer is option 'B'. Can you explain this answer?
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Identify the incorrect statement among the following:a)Lanthanoid contraction is the accumulation of successive shrinkages.b)As a result of lanthanoid contraction, the properties of 4d series of the transition elements have no similarities with the 5d series of elements.c)Shielding power of 4f electrons is quite weak.d)There is a decrease in the radii of the atoms or ions as one proceeds from La to Lu.Correct answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Identify the incorrect statement among the following:a)Lanthanoid contraction is the accumulation of successive shrinkages.b)As a result of lanthanoid contraction, the properties of 4d series of the transition elements have no similarities with the 5d series of elements.c)Shielding power of 4f electrons is quite weak.d)There is a decrease in the radii of the atoms or ions as one proceeds from La to Lu.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Identify the incorrect statement among the following:a)Lanthanoid contraction is the accumulation of successive shrinkages.b)As a result of lanthanoid contraction, the properties of 4d series of the transition elements have no similarities with the 5d series of elements.c)Shielding power of 4f electrons is quite weak.d)There is a decrease in the radii of the atoms or ions as one proceeds from La to Lu.Correct answer is option 'B'. Can you explain this answer?.
Identify the incorrect statement among the following:a)Lanthanoid contraction is the accumulation of successive shrinkages.b)As a result of lanthanoid contraction, the properties of 4d series of the transition elements have no similarities with the 5d series of elements.c)Shielding power of 4f electrons is quite weak.d)There is a decrease in the radii of the atoms or ions as one proceeds from La to Lu.Correct answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Identify the incorrect statement among the following:a)Lanthanoid contraction is the accumulation of successive shrinkages.b)As a result of lanthanoid contraction, the properties of 4d series of the transition elements have no similarities with the 5d series of elements.c)Shielding power of 4f electrons is quite weak.d)There is a decrease in the radii of the atoms or ions as one proceeds from La to Lu.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Identify the incorrect statement among the following:a)Lanthanoid contraction is the accumulation of successive shrinkages.b)As a result of lanthanoid contraction, the properties of 4d series of the transition elements have no similarities with the 5d series of elements.c)Shielding power of 4f electrons is quite weak.d)There is a decrease in the radii of the atoms or ions as one proceeds from La to Lu.Correct answer is option 'B'. Can you explain this answer?.
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