Question

Hydrogen is not a metal-but it has been assigned a place in the reactivity series of metals. Give the reason for it.

Answer 1

Hydrogen placed in reactive series because it has one electron in its valence shell, it shows reactivity that resembles Electropositive metals ( lose of electron and become $H^{+}$).

And also reactivity that resembles Electronegative non-metals ( gain of electron and become $H^{-}$).