Question

Among the given elements: $O,Cl,F,N,P,Sn,Tl,Na$ and $Ti$, the number of elements showing only one non-zero oxidation state is :

• A. $4$
• B. $2$
• C. $3$
• D. $5$

Answer 1

The correct option is B $2$

All except $Na$ and $F$ show variable non-zero oxidation states. Only $Na$ and $F$ shows only one non-zero oxidation state.