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प्रश्न
Give reasons for the following:
The chemistry of actinoids elements is not so smooth as that of the lanthanoids.
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
How would you account for the following:
Actinoid contraction is greater than lanthanoid contraction.
With reference to structural variability and chemical reactivity, write the differences between lanthanoids and actinoids
Manganese in the +2 oxidation state is more stable than +3 oxidation state where as iron is stable at +3 oxidation state than +2 oxidation state. Explain why?
Actinoid series begins at ____________ and ends at ____________.
The actinoid contraction is attributed to the ____________.
The number of unpaired f-electrons in ytterbium (Z = 70) is ____________.
The highest oxidation state in plutonium (At. no. = 94) is ______.
Which among the following actinoids exhibits highest oxidation state +7?
The incorrect statement among the following is:
What causes actinoid contraction?
