Question

Sodium and potassium react with water much more vigorously than lithium because:

Answer 1

Answer:

Explanation:

The molten metal spreads over the water and exposes a larger surface to water. Also, the hydrated radius of lithium is the greatest out of all alkali metals. This reduces the ionic mobility which in turn reduces the speed of the molten metal. That's why potassium gives a more violent reaction with water.

Answer 2

Explanation:

Sodium and potassium react with water more vigorously than lithium because they the metals are melted and readily catches fire.