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Trace Elements Laboratory |
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A
Joint Venture of London Health Sciences Centre and St. Joseph's
Health Care London
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Rubidium (Rb)
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This element is not curently measured in this
laboratory.
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Rubidium can be liquid at ambient temperature, but only on a hot daygiven that its melting point is about 40°C. It is a soft, silvery-whitemetallic element of the alkali metals group (Group 1). It is one of the most most electropositive and alkaline elements. It ignites spontaneously in air and reacts violently with water, setting fire to the liberated hydrogen. As so all the other alkali metals, it forms amalgams with mercury. It alloys with gold, caesium, sodium, and potassium. It colours a flame yellowish-violet.
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