The correct order of ionic radii of trivalent ions $Y^{3+}$,$La^{3+}$,$Eu^{3+}$,and $Lu^{3+}$ is $(Y=39, La=57, Eu=63, Lu=71)$.
- A$Lu^{3+} < Eu^{3+} < La^{3+} < Y^{3+}$
- B$La^{3+} < Eu^{3+} < Lu^{3+} < Y^{3+}$
- C$Y^{3+} < Lu^{3+} < Eu^{3+} < La^{3+}$
- D$Y^{3+} < La^{3+} < Eu^{3+} < Lu^{3+}$
Explore More
Similar Questions
Which one of the following ions has the same number of unpaired electrons as those present in $V^{3+}$ ion?
Which of the following compounds is colorless?
Medium
View SolutionThe decrease in atomic volume from $Cr$ to $Cu$ in the $3d$ series is very negligible because:
Easy
View SolutionThe increase in the atomic radii of the third $(5d)$ series of transition elements is very small,which may be accounted for by the filling of '$X$' orbitals before '$Y$' orbitals. $X$ and $Y$ are:
Match the following:
List-$I$ (Element) List-$II$ (Block) $A$. $Cd$ $I$. $f$-block $B$. $Eu$ $II$. $s$-block $C$. $Se$ $III$. $d$-block $D$. $Ba$ $IV$. $p$-block
The correct answer is:
| List-$I$ (Element) | List-$II$ (Block) |
| $A$. $Cd$ | $I$. $f$-block |
| $B$. $Eu$ | $II$. $s$-block |
| $C$. $Se$ | $III$. $d$-block |
| $D$. $Ba$ | $IV$. $p$-block |
The correct answer is:
Vedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo