Which of the following statements concerning lanthanide elements is false?
- ALanthanides are separated from one another by ion exchange method.
- BIonic radii of trivalent lanthanides steadily increase with an increase in the atomic number.
- CAll lanthanides are highly dense metals.
- DThe most characteristic oxidation state of lanthanide elements is $+3$.
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Similar Questions
Identify the correct statements from the following.
$(i)$ $Eu^{2+}$ and $Yb^{2+}$ are reducing agents.
$(ii)$ The electronic configuration of $Pr^{3+}$ is $[Xe] 4f^3$.
$(iii)$ Aqueous solution of $LaCl_3$ is colourless.
$(i)$ $Eu^{2+}$ and $Yb^{2+}$ are reducing agents.
$(ii)$ The electronic configuration of $Pr^{3+}$ is $[Xe] 4f^3$.
$(iii)$ Aqueous solution of $LaCl_3$ is colourless.
$(i) La(OH)_3$ is the least basic among lanthanide hydroxides. $(ii) Zr^{4+}$ and $Hf^{4+}$ have almost identical ionic radii. $(iii) Ce^{4+}$ can act as an oxidizing agent. Which of the above statements are correct?
Medium
View SolutionWhich of the following elements shows the maximum number of different oxidation states in its compounds?
MediumAIPMT 1998
View SolutionThe correct order of ionic radii of $Ce$,$La$,$Pm$ and $Yb$ in $+3$ oxidation state is
Easy
View SolutionOn which factors does the stability of an oxidation state in Lanthanoid elements depend?
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