Some Basic Concepts of Chemistry - Result Question 29 — JEE PYQ Chapterwise

Answer:

Correct Answer: 29. (2)

Solution:

Only F and Na show only one non-zero oxidation state.

$\begin{aligned} \mathrm{O} & =\mathrm{O}^{-}, \mathrm{O}^{2-}, \mathrm{O}^{2+} ; \\ \mathrm{Cl} & =-1 \text { to }+7 \\ \mathrm{~N} & =-3 \text { to }+5 \\ \mathrm{P} & =-3 \text { to }+5 \\ \mathrm{Sn} & =+2,+4 \\ \mathrm{Tl} & =+1,+3 \text { (rare but does exist) } \\ \mathrm{Ti} & =+2,+3,+4 \end{aligned}$