Which of the following is an isotonic pair?
- A$_{19}^{40}K, _{20}^{40}Ca$
- B$_{19}^{39}K, _{20}^{40}Ca$
- C$_{18}^{33}Ar, _{18}^{40}Ar$
- D$_{18}^{40}Ar, _{20}^{40}Ca$
Explore More
Similar Questions
Which of the following does not contain a number of neutrons equal to that of $_{18}^{40}Ar$?
Medium
View SolutionAn element with mass number $81$ contains $31.7\%$ more neutrons as compared to protons. Assign the atomic symbol.
Medium
View SolutionThe number of protons,neutrons and electrons in the ion ${ }_{16}^{32} S^{2-}$ respectively are
Match the following atomic species with their correct classification:
$(i) \ { }_{26} Fe ^{54}, { }_{26} Fe ^{56}, { }_{26} Fe ^{57}, { }_{26} Fe ^{58}$ $(a)$ Isotopes $(ii) \ { }_1 H ^3, { }_2 He ^3$ $(b)$ Isotones $(iii) \ { }_{32} Ge ^{76}, { }_{33} As ^{77}$ $(c)$ Isodiaphers $(iv) \ { }_{92} U ^{235}, { }_{90} Th ^{231}$ $(d)$ Isobars $(v) \ { }_1 H ^1, { }_1 D ^2, { }_1 T^3$
| $(i) \ { }_{26} Fe ^{54}, { }_{26} Fe ^{56}, { }_{26} Fe ^{57}, { }_{26} Fe ^{58}$ | $(a)$ Isotopes |
| $(ii) \ { }_1 H ^3, { }_2 He ^3$ | $(b)$ Isotones |
| $(iii) \ { }_{32} Ge ^{76}, { }_{33} As ^{77}$ | $(c)$ Isodiaphers |
| $(iv) \ { }_{92} U ^{235}, { }_{90} Th ^{231}$ | $(d)$ Isobars |
| $(v) \ { }_1 H ^1, { }_1 D ^2, { }_1 T^3$ |
Easy
View SolutionAn ordinary oxygen sample contains:
Medium
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