Difficult
Among the following,the least and most metallic elements will be respectively:
$(I) [He] 2s^1$
$(II) [Kr] 5s^2 4d^{10} 5p^5$
$(III) [Xe] 6s^1$
$(IV) [He] 2s^2 2p^5$
$(I) [He] 2s^1$
$(II) [Kr] 5s^2 4d^{10} 5p^5$
$(III) [Xe] 6s^1$
$(IV) [He] 2s^2 2p^5$
- A$I$ and $II$
- B$II$ and $IV$
- C$III$ and $IV$
- D$IV$ and $III$
Explore More
Similar Questions
Which one of the following represents the electronic configuration of the most electropositive element?
MediumAIIMS 1982
View SolutionAn element $A$ dissolves in both acid and alkali. It is an example of
Easy
View SolutionThe characteristics of elements $X$,$Y$ and $Z$ with atomic numbers,respectively,$33$,$53$ and $83$ are :
Chemical properties of $Li$ and $Mg$ are similar because
Easy
View SolutionThe atomic numbers of the metallic and non-metallic elements which are liquid at room temperature respectively are
Difficult
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