Medium
The species $Ar$,$K^{+}$ and $Ca^{2+}$ contain the same number of electrons. In which order do their radii increase?
- A$Ca^{2+} < K^{+} < Ar$
- B$K^{+} < Ar < Ca^{2+}$
- C$Ar < K^{+} < Ca^{2+}$
- D$Ca^{2+} < Ar < K^{+}$
Explore More
Similar Questions
From the given set of species,point out the species from each set having the least atomic/ionic radius:
$(A)$ $F^{-}, Na^{+}, Mg^{+2}$
$(B)$ $Ni, Cu, Zn$
$(C)$ $N^{-3}, Cs^{+}, H^{-}$
$(D)$ $Li, Li^{+}, Be^{+2}$
$(A)$ $F^{-}, Na^{+}, Mg^{+2}$
$(B)$ $Ni, Cu, Zn$
$(C)$ $N^{-3}, Cs^{+}, H^{-}$
$(D)$ $Li, Li^{+}, Be^{+2}$
Difficult
View SolutionWhich of the following atoms has the smallest atomic size?
Easy
View SolutionThe correct order of atomic radii of $B, Be, N$ and $C$ is
Among metals,non-metals,and noble gases,which one has the largest atomic radius? Why?
Easy
View SolutionAssertion: The atomic radius of gallium is higher than that of aluminium.
Reason: The presence of additional $d$-electrons offers poor screening effect for the outer electrons from increased nuclear charge.
Reason: The presence of additional $d$-electrons offers poor screening effect for the outer electrons from increased nuclear charge.
MediumAIIMS 2017
View SolutionVedclass 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