Rubidium is a chemical element; it has symbol Rb and atomic number 37. It is a very soft, whitish-grey solid in the alkali metal group, similar to potassium and caesium. [9] Rubidium is the first alkali metal in the group to have a density higher than water.

Rubidium, chemical element of Group 1 (Ia) in the periodic table, the alkali metal group. Rubidium is the second most reactive metal and is very soft, with a silvery-white luster.

Rubidium is ductile metal and used for various purposes. It has a melting point of 39.3°C and have a low density, 1.532 g/cm 3. Rubidium is a very reactive metal. It undergoes rapid oxidation in the presence of air. Rubidium burns with a purplish flame like potassium.

Element Rubidium (Rb), Group 1, Atomic Number 37, s-block, Mass 85.468. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images. Jump to main content

2023年10月10日 · Rubidium is a soft, silvery-white metallic element of the alkali metal group, known for its strikingly colorful flame test. People encounter rubidium in specialized applications such as atomic clocks, medical research, and occasionally in fireworks for its characteristic red-purple flame coloration.

Rubidium is a chemical element with symbol Rb and atomic number 37. Classified as a n alkali metal, Rubidium is a solid at room temperature. [Kr]5s 1. J.C. Slater, J Chem Phys, 1964, 41 (10), 3199-3205. DOI:10.1063/1.1725697.

2019年7月3日 · Rubidium is a silver-colored alkali metal with a melting point slightly higher than body temperature. The element is atomic number 37 with element symbol Rb. Here is a collection of rubidium element facts. Fun Fact: The half life of the radioactive isotope Rb-87 is 49 billion years or more than three times the age of the universe.