Identify the incorrect statement from the following:

1. Alkali metals form hydroxides and ${\text{H}}_2$ with water. Correct.2. Incorrect statement: In Potassium superoxide (${\text{KO}}_2$), Potassium is an alkali metal and always has an oxidation state of $+1$. The superoxide ion is ${\text{O}}_2^{-}$, where the average oxidation state of Oxygen is $-1/2$.3. IE decreases down the group due to size increase. Correct.4. Li is the strongest reducing agent due to high hydration enthalpy. Correct.