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प्रश्न
Compare the chemistry of actinoids with that of the lanthanoids with special reference to oxidation state.
उत्तर
Lanthanoids show limited oxidation states (+2, +3, +4) in which the +3 oxidation state is the most common. This is because of the large energy gap between the 4f, 5d and 6s sub-shells. On the other hand, actinoids show a large number of oxidation states because the energy gap between 5f, 6d and 7s sub-shells is less.
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संबंधित प्रश्न
What are chemical twins? Write ‘two’ examples.
What are lanthanoids?
Account for the following :
Zr and Hf have almost similar atomic radii.
Compare the chemistry of actinoids with that of lanthanoids with special reference to electronic configuration.
The chemistry of the actinoid elements is not so smooth as that of the Lanthanoids. Justify this statement by giving some examples from the oxidation state of these elements.
Name the members of the lanthanoid series which exhibit +4 oxidation state and those which exhibit +2 oxidation state. Try to correlate this type of behavior with the electronic configurations of these elements.
What is lanthanoid contraction?
What are the consequences of lanthanoid contraction?
Explain the cause of Lanthanoids contraction.
Name an element of lanthanoid series which is well knwon to shown +4 oxidation state. Is it a strong oxidising agent or reducing agent?
What is lanthanoid contraction? Write the.............
What is meant by Lanthanide contraction? Write the general electronic configuration of inner transition elements.
The f-block elements are known as ____________.
Which of the following pairs has the same ionic size?
Zr (Z = 40) and Hf (Z = 72) have similar atomic and ionic radii because of _______.
Write any two consequences of Lanthanoid Contraction.
The lathanide ion that would show colour is ______.
Mischmetal is an alloy consisting mainly of ______.
