Q. Among the following, the number of elements showing only one non-zero oxidation state is $O,\ Cl,\ F,\ N,\ P,\ Sn,\ Tl,\ Na,\ Ti$
A) 1
B) 2
C) 3
D) 4
Explanation
(b)
F is the most electronegative element which cannot loose electron to other so it exhibits only$-$1 state. Na is alkali metal which can loose only one electron so exhibits only +1 state.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.