The lanthanide contraction is responsible for the fact that
- A$Zr$ and $Hf$ have same atomic sizes
- B$Zr$ and $Hf$ have same properties
- C$Zr$ and $Hf$ have different atomic sizes
- DBoth $(a)$ and $(b)$
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Similar Questions
Identify the formula of compound $(B)$ formed in the following reaction:
$(i)$ Lanthanoids $(Ln)$ are burnt in oxygen to form compound $(A)$.
$(ii)$ Compound $(A)$ reacts with $CO_2$ in excess to form compound $(B)$.
$(i)$ Lanthanoids $(Ln)$ are burnt in oxygen to form compound $(A)$.
$(ii)$ Compound $(A)$ reacts with $CO_2$ in excess to form compound $(B)$.
Identify the correct actinide series from the following.
Choose the correct option regarding the following.
Assertion: Actinides exhibit a larger number of oxidation states than lanthanides.
Reason: There is a large energy gap between $5f$,$6d$ and $7s$ sub-shells.
Assertion: Actinides exhibit a larger number of oxidation states than lanthanides.
Reason: There is a large energy gap between $5f$,$6d$ and $7s$ sub-shells.
Which of the following compounds is the most acidic?
Medium
View SolutionFrom the list given below,the number of lanthanides which exhibit $+4$ oxidation state in their oxides is: $Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy$
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