Question

Among the following, the number of elements showing only one non-zero oxidation state is:
O, CI, F, N, P, Sn, Tl, Na, Ti​

Answer 1

$\texttt{Among the following O,Cl,F,N,P,Tl,Na,Ti, the number elements showing only one non-zero oxidation state is 2.}$

$\texttt{hope this answer helps you}$