Among the following, the number of elements showing only one non-zero oxidation state is O, Cl, F, N, P, Sn,…
Among the following, the number of elements showing only one non-zero oxidation state is O, Cl, F, N, P, Sn, Tl, $\mathrm{Na}, \mathrm{Ti}$
Solution
F is the most electronegative element which cannot loose electron to other so only $-1$ Na is alkali metal which can loose only one electron so $+1$ Basics of general chemistry Basic understanding I