Question

why hydrogen is placed in reactivity series of metals​

Answer 1

Answer:

Hydrogen is included in the reactivity series of metals because it's property of electroposivity (i.e losing electron to form positive ion) is similar to that of metals, thats why we can relate it with metals. ... For example, zinc is above hydrogen so it can't be displaced because it is more reactive.

Answer 2

Heya here is the ans of your qun

☆ Hydrogen is a unique element for many reasons. It has one electron and one proton (and no neutrons).

In the periodic table, hydrogen is placed is the first row just before inert gas Helium. Because it has one electron in its valence shell, it shows reactivity that resembles electropositive metals (lose an electron and become H+) and reactivity that resembles electronegative non-metals (gain an electron and become H-). Depending on what it reacts with, hydrogen can form an acidic substance that releases H+ or protons (e.g. HCl) or a basic substance that releases H- or hydride ion (e.g. LiH).

This is the reason hydrogen is placed in the reactivity series of metals....

hope it helps u