Classification of Elements on the Basis of Electronic Configurations
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CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313023 The electronic configuration for Neodymium is :
[Atomic number for Neodymium is 60]

1 \([\mathrm{Xe}] 4 \mathrm{f}^{4} 6 \mathrm{~s}^{2}\)
2 \([\mathrm{Xe}] 4 \mathrm{f}^{6} 6 \mathrm{~s}^{2}\)
3 \([\mathrm{Xe}] 5 \mathrm{f}^{7} 7 \mathrm{~s}^{2}\)
4 \({\text{[Xe]}}\,{\text{4}}{{\text{f}}^{{\text{14}}}}{\text{5}}{{\text{d}}^{\text{1}}}{\text{6}}{{\text{s}}^{\text{2}}}\)
JEE - 2024
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313024 Assertion :
Chemistry of actinoids is more complicated than lanthanoids.
Reason :
Actinoid elements are radioactive.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313025 The elements in which electrons are progressively filled in 4f-orbital are called

1 Actinoids
2 Transition elements
3 Lanthanoids
4 Halogens
NCERT Exemplar
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313026 The f-block elements are called ‘inner transition elements’ because

1 They have properties similar to those of transition elements.
2 They are kept away from transition elements
3 The last electron enters the f-orbital of the penultimate shell
4 The last electron enters the f-orbital of the anti-penultimate shell.
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CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313023 The electronic configuration for Neodymium is :
[Atomic number for Neodymium is 60]

1 \([\mathrm{Xe}] 4 \mathrm{f}^{4} 6 \mathrm{~s}^{2}\)
2 \([\mathrm{Xe}] 4 \mathrm{f}^{6} 6 \mathrm{~s}^{2}\)
3 \([\mathrm{Xe}] 5 \mathrm{f}^{7} 7 \mathrm{~s}^{2}\)
4 \({\text{[Xe]}}\,{\text{4}}{{\text{f}}^{{\text{14}}}}{\text{5}}{{\text{d}}^{\text{1}}}{\text{6}}{{\text{s}}^{\text{2}}}\)
JEE - 2024
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313024 Assertion :
Chemistry of actinoids is more complicated than lanthanoids.
Reason :
Actinoid elements are radioactive.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313025 The elements in which electrons are progressively filled in 4f-orbital are called

1 Actinoids
2 Transition elements
3 Lanthanoids
4 Halogens
NCERT Exemplar
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313026 The f-block elements are called ‘inner transition elements’ because

1 They have properties similar to those of transition elements.
2 They are kept away from transition elements
3 The last electron enters the f-orbital of the penultimate shell
4 The last electron enters the f-orbital of the anti-penultimate shell.
NEET DIGITAL LIBRARY
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313023 The electronic configuration for Neodymium is :
[Atomic number for Neodymium is 60]

1 \([\mathrm{Xe}] 4 \mathrm{f}^{4} 6 \mathrm{~s}^{2}\)
2 \([\mathrm{Xe}] 4 \mathrm{f}^{6} 6 \mathrm{~s}^{2}\)
3 \([\mathrm{Xe}] 5 \mathrm{f}^{7} 7 \mathrm{~s}^{2}\)
4 \({\text{[Xe]}}\,{\text{4}}{{\text{f}}^{{\text{14}}}}{\text{5}}{{\text{d}}^{\text{1}}}{\text{6}}{{\text{s}}^{\text{2}}}\)
JEE - 2024
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313024 Assertion :
Chemistry of actinoids is more complicated than lanthanoids.
Reason :
Actinoid elements are radioactive.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313025 The elements in which electrons are progressively filled in 4f-orbital are called

1 Actinoids
2 Transition elements
3 Lanthanoids
4 Halogens
NCERT Exemplar
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313026 The f-block elements are called ‘inner transition elements’ because

1 They have properties similar to those of transition elements.
2 They are kept away from transition elements
3 The last electron enters the f-orbital of the penultimate shell
4 The last electron enters the f-orbital of the anti-penultimate shell.
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CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313023 The electronic configuration for Neodymium is :
[Atomic number for Neodymium is 60]

1 \([\mathrm{Xe}] 4 \mathrm{f}^{4} 6 \mathrm{~s}^{2}\)
2 \([\mathrm{Xe}] 4 \mathrm{f}^{6} 6 \mathrm{~s}^{2}\)
3 \([\mathrm{Xe}] 5 \mathrm{f}^{7} 7 \mathrm{~s}^{2}\)
4 \({\text{[Xe]}}\,{\text{4}}{{\text{f}}^{{\text{14}}}}{\text{5}}{{\text{d}}^{\text{1}}}{\text{6}}{{\text{s}}^{\text{2}}}\)
JEE - 2024
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313024 Assertion :
Chemistry of actinoids is more complicated than lanthanoids.
Reason :
Actinoid elements are radioactive.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313025 The elements in which electrons are progressively filled in 4f-orbital are called

1 Actinoids
2 Transition elements
3 Lanthanoids
4 Halogens
NCERT Exemplar
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313026 The f-block elements are called ‘inner transition elements’ because

1 They have properties similar to those of transition elements.
2 They are kept away from transition elements
3 The last electron enters the f-orbital of the penultimate shell
4 The last electron enters the f-orbital of the anti-penultimate shell.
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