Q. Which of the following ion is the smallest ion?
A) $O_{2}$
B) $O_{2}^{+}$
C) $O_{2}^{-}$
D) $O_{2}^{2 -}$
Explanation
(b)
Cation has small size than parent atom and anion has larger size than parent atom
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.