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प्रश्न
Give reasons for the following:
The chemistry of actinoids elements is not so smooth as that of the lanthanoids.
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उत्तर
Lanthanoids primarily show three oxidation states (+2, +3, +4). Among these oxidation states, +3 state is the most common. Lanthanoids display a limited number of oxidation states because the energy difference between 4f, 5d, and 6s orbitals is quite large. On the other hand, the energy difference between 5f, 6d, and 7s orbitals is very less.
Hence, actinoids display a large number of oxidation states. For example, uranium and plutonium display +3, +4, +5, and +6 oxidation states while neptunium displays +3, +4, +5, and +7. The most common oxidation state in the case of actinoids is also +3.
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संबंधित प्रश्न
With reference to structural variability and chemical reactivity, write the differences between lanthanoids and actinoids
Write one similarity and one difference between the chemistry of lanthanoid and actinoid elements.
How would you account the following :
Highest fluoride of Mn is MnF4 whereas the highest oxide is Mn2O7.
Which of the following actinoids shows +6 oxidation state?
The actinoid contraction is attributed to the ____________.
The highest oxidation state in plutonium (At. no. = 94) is ______.
The electronic configuration of Ux+ ion is [Rn]. What is the value of x?
[At. No. of U = 92]
Which of the following oxidation state is common for all lanthanoids?
Why do actinoids show variable oxidation states?
What are actinoids? Give their general electronic configuration.
