Which one of the following lanthanoids does not form $MO_{2}$? [$M$ is lanthanoid metal]
- A$Pr$
- B$Dy$
- C$Nd$
- D$Yb$
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Similar Questions
The correct increasing order of basic character of $Ce(OH)_3$,$Gd(OH)_3$ and $Nd(OH)_3$ is
DifficultTS EAMCET 2019
View SolutionWhich of the following statements is incorrect?
Medium
View SolutionIdentify all the correct statements for Lanthanide contraction.
$(A)$ The covalent properties of the Lanthanide metal hydroxides increase from $La$ to $Lu$.
$(B)$ The chemical reactivity decreases from $La$ to $Lu$.
$(C)$ $La(OH)_3$ is more basic than $Lu(OH)_3$.
$(D)$ $Zr$ and $Hf$ have about the same radius.
$(E)$ Separation of Lanthanides from one another is easy.
$(A)$ The covalent properties of the Lanthanide metal hydroxides increase from $La$ to $Lu$.
$(B)$ The chemical reactivity decreases from $La$ to $Lu$.
$(C)$ $La(OH)_3$ is more basic than $Lu(OH)_3$.
$(D)$ $Zr$ and $Hf$ have about the same radius.
$(E)$ Separation of Lanthanides from one another is easy.
DifficultTS EAMCET 2022
View SolutionChoose 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.
In the context of the lanthanoids,which of the following statements is not correct?
MediumAIEEE 2011
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