Question

Write chemical symbols for any two elements that are placed below Hydrogen in the reactivity series.

Answer 1

Reactivity Series:

1. In a reactivity series, the element which is most reactive is placed at the top and the least reactive element at the bottom.
2. More reactive metals have a greater tendency to lose electrons and they form positive ions .
3. The elements that are placed below Hydrogen in the reactivity series are Copper ($\mathrm{Cu}$), Mercury ($\mathrm{Hg}$), Silver ($\mathrm{Ag}$), Platinum ($\mathrm{Pt}$) and Gold($\mathrm{Au}$).

Therefore, the chemical symbols of any two elements that are placed below Hydrogen in the reactivity series are $\mathrm{Cu}$ (Copper), $\mathrm{Hg}$ (Mercury).