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Larger number of oxidation states are exhibited by the actinides than those by the lanthanides, the main reason being
(AIEEE 2008)
- a)4f-orbitals more diffused than the 5f-orbitals
- b)lesser energy difference between 5f and 6d than between 4f and 5d-orbitals
- c)more energy difference between 5f and 6d than between 4f and 5cf-orbitals
- d)more reactive nature of the actinides than the lanthanides
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
Larger number of oxidation states are exhibited by the actinides than ...
Lanthanoids : [Xe] f1-145d0-16s2
Actinoids : [Rn]5f1-14 6d0-17s2
Lanthanoids and actinoids use core d and f-orbitals also to show higher oxidation state. As actinoids have comparatively low energy difference between f and d-orbitals, thus they show more number of oxidation states.
Actinoids : [Rn]5f1-14 6d0-17s2
Lanthanoids and actinoids use core d and f-orbitals also to show higher oxidation state. As actinoids have comparatively low energy difference between f and d-orbitals, thus they show more number of oxidation states.
Most Upvoted Answer
Larger number of oxidation states are exhibited by the actinides than ...
Lesser energy difference between 5F and 6D than between 4F and 5D-orbitals.
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Larger number of oxidation states are exhibited by the actinides than ...
Explanation:
The actinides and lanthanides are two series of elements that are located at the bottom of the periodic table. They are often referred to as the f-block elements because their valence electrons occupy f-orbitals. The actinides include elements from atomic number 89 (actinium) to 103 (lawrencium), while the lanthanides include elements from atomic number 57 (lanthanum) to 71 (lutetium).
Reason for larger number of oxidation states in actinides:
The main reason for the larger number of oxidation states exhibited by the actinides compared to the lanthanides is the lesser energy difference between 5f and 6d orbitals than between 4f and 5d orbitals. This allows the actinides to form a greater variety of oxidation states.
Energy difference between 4f and 5d orbitals:
The 4f and 5d orbitals are close in energy, but the energy difference between them is relatively large. As a result, it is more difficult for the lanthanides to achieve a higher oxidation state because it would involve promoting an electron from the 4f orbital to the higher energy 5d orbital. This requires a significant amount of energy and is therefore less favorable.
Energy difference between 5f and 6d orbitals:
On the other hand, the 5f and 6d orbitals have a smaller energy difference. This allows the actinides to more easily achieve higher oxidation states by promoting electrons from the 5f orbital to the 6d orbital. The smaller energy difference between these orbitals makes it energetically more favorable for the actinides to exhibit a larger number of oxidation states.
Conclusion:
In conclusion, the main reason for the larger number of oxidation states exhibited by the actinides compared to the lanthanides is the lesser energy difference between 5f and 6d orbitals than between 4f and 5d orbitals. This allows the actinides to more easily achieve higher oxidation states, leading to a greater variety of oxidation states in this series of elements.
The actinides and lanthanides are two series of elements that are located at the bottom of the periodic table. They are often referred to as the f-block elements because their valence electrons occupy f-orbitals. The actinides include elements from atomic number 89 (actinium) to 103 (lawrencium), while the lanthanides include elements from atomic number 57 (lanthanum) to 71 (lutetium).
Reason for larger number of oxidation states in actinides:
The main reason for the larger number of oxidation states exhibited by the actinides compared to the lanthanides is the lesser energy difference between 5f and 6d orbitals than between 4f and 5d orbitals. This allows the actinides to form a greater variety of oxidation states.
Energy difference between 4f and 5d orbitals:
The 4f and 5d orbitals are close in energy, but the energy difference between them is relatively large. As a result, it is more difficult for the lanthanides to achieve a higher oxidation state because it would involve promoting an electron from the 4f orbital to the higher energy 5d orbital. This requires a significant amount of energy and is therefore less favorable.
Energy difference between 5f and 6d orbitals:
On the other hand, the 5f and 6d orbitals have a smaller energy difference. This allows the actinides to more easily achieve higher oxidation states by promoting electrons from the 5f orbital to the 6d orbital. The smaller energy difference between these orbitals makes it energetically more favorable for the actinides to exhibit a larger number of oxidation states.
Conclusion:
In conclusion, the main reason for the larger number of oxidation states exhibited by the actinides compared to the lanthanides is the lesser energy difference between 5f and 6d orbitals than between 4f and 5d orbitals. This allows the actinides to more easily achieve higher oxidation states, leading to a greater variety of oxidation states in this series of elements.
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Larger number of oxidation states are exhibited by the actinides than those by the lanthanides, the main reason being(AIEEE2008)a)4f-orbitals more diffused than the 5f-orbitalsb)lesser energy difference between 5f and 6d than between 4f and 5d-orbitalsc)more energy difference between 5f and 6d than between 4f and 5cf-orbitalsd)more reactive nature of the actinides than the lanthanidesCorrect answer is option 'B'. Can you explain this answer?
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Larger number of oxidation states are exhibited by the actinides than those by the lanthanides, the main reason being(AIEEE2008)a)4f-orbitals more diffused than the 5f-orbitalsb)lesser energy difference between 5f and 6d than between 4f and 5d-orbitalsc)more energy difference between 5f and 6d than between 4f and 5cf-orbitalsd)more reactive nature of the actinides than the lanthanidesCorrect answer is option 'B'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Larger number of oxidation states are exhibited by the actinides than those by the lanthanides, the main reason being(AIEEE2008)a)4f-orbitals more diffused than the 5f-orbitalsb)lesser energy difference between 5f and 6d than between 4f and 5d-orbitalsc)more energy difference between 5f and 6d than between 4f and 5cf-orbitalsd)more reactive nature of the actinides than the lanthanidesCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Larger number of oxidation states are exhibited by the actinides than those by the lanthanides, the main reason being(AIEEE2008)a)4f-orbitals more diffused than the 5f-orbitalsb)lesser energy difference between 5f and 6d than between 4f and 5d-orbitalsc)more energy difference between 5f and 6d than between 4f and 5cf-orbitalsd)more reactive nature of the actinides than the lanthanidesCorrect answer is option 'B'. Can you explain this answer?.
Larger number of oxidation states are exhibited by the actinides than those by the lanthanides, the main reason being(AIEEE2008)a)4f-orbitals more diffused than the 5f-orbitalsb)lesser energy difference between 5f and 6d than between 4f and 5d-orbitalsc)more energy difference between 5f and 6d than between 4f and 5cf-orbitalsd)more reactive nature of the actinides than the lanthanidesCorrect answer is option 'B'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Larger number of oxidation states are exhibited by the actinides than those by the lanthanides, the main reason being(AIEEE2008)a)4f-orbitals more diffused than the 5f-orbitalsb)lesser energy difference between 5f and 6d than between 4f and 5d-orbitalsc)more energy difference between 5f and 6d than between 4f and 5cf-orbitalsd)more reactive nature of the actinides than the lanthanidesCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Larger number of oxidation states are exhibited by the actinides than those by the lanthanides, the main reason being(AIEEE2008)a)4f-orbitals more diffused than the 5f-orbitalsb)lesser energy difference between 5f and 6d than between 4f and 5d-orbitalsc)more energy difference between 5f and 6d than between 4f and 5cf-orbitalsd)more reactive nature of the actinides than the lanthanidesCorrect answer is option 'B'. Can you explain this answer?.
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