Rubidium (Rb), element 37 – Learn Acer periodic table

Alkali metal, atomic number 37.

Rubidium is a chemical element with symbol Rb and atomic number 37. Rubidium is a soft, silvery-white metallic element of the alkali metal group, with an atomic mass of 85.4678. Elemental rubidium is highly reactive, with properties similar to those of other alkali metals, such as very rapid oxidation in air.

Symbol Rb. Atomic mass 85.46783 u. Group 1, period 5. Electron configuration [Kr] 5s1. Electrons per shell 2, 8, 18, 8, 1. State at room temperature: Solid. Melting point 39.3 °C, boiling point 687.9 °C. Discovered by Robert Bunsen.

Element data from Wikipedia, CC BY-SA 3.0.

Rubidium (Rb), element 37 – Learn Acer periodic table

Rubidium

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