Question

Metals such as Sodium and Potassium are kept immersed in Kerosene. Why?

Answer 1

Sodium ($\mathrm{Na}$) and Potassium ($\mathrm{K}$) are the metals placed in the s-block of the periodic table and they are very reactive.

In the presence of Oxygen (${\mathrm{O}}_2$) which is present in the air, Sodium ($\mathrm{Na}$) and Potassium ($\mathrm{K}$) may explode or catch fire which can be very dangerous to handle due to their high reactivity.

That is why Sodium ($\mathrm{Na}$) and Potassium ($\mathrm{K}$) are kept immersed in the Kerosene to avoid the contact with air.

In kerosene Sodium ($\mathrm{Na}$) and Potassium ($\mathrm{K}$) remains unreactive and are easy to handle.