Rubidium can be liquid at room temperature. It is a soft, silvery-white metallic element of the alkali group and is the second most electropositive and alkaline element. It must be kept under a dry mineral oil or in a vacuum or inert atmosphere.
Melting point: 39.3 °C Boiling point: 688 °C
An ingot is a cast, normally with a rectangular or round shape.
