Question

Which metal does not react with water at all?

Answer 1

1. When a metal reacts with water it forms a metal hydroxide and hydrogen is released.
2. Alkali metals and alkaline earth metals are highly reactive with water.
3. For example Sodium, Potassium, Calcium, etc. $$\begin{gathered} 2\mathrm{Na}\left(\mathrm{s}\right)+2{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)\to 2\mathrm{NaOH}\left(\mathrm{aq}\right)+{\mathrm{H}}_2\left(\mathrm{g}\right) \\ \mathrm{Sodium}\mathrm{Hydroxide} \end{gathered}$$
4. The least reactive metal towards water is Silver$\left(\mathrm{Ag}\right)$ and Gold$\left(\mathrm{Au}\right)$.
5. Due to their less reactivity towards the water, Silver, and Gold are used in ornaments and coin preparation.