• rubidium (Rb) – Punpedia

    Rubidium (Rb), 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 lustre. Rubidium was discovered (1861) spectroscopically by German scientists Robert Bunsen and Gustav Kirchhoff and named

  • Kids.Net.Au - Encyclopedia > Rubidium

    Rubidium-strontium dating, method of estimating the age of rocks, minerals, and meteorites from measurements of the amount of the stable isotope strontium-87 formed by the decay of the unstable isotope rubidium-87 that was present in the rock at the time of its formation. Rubidium-87 comprises

  • Rubidium - What does rubidium stand for? The Free Dictionary

    Punpedia The Online Encyclopedia of Puns. Tag: rubidium (Rb) Chemistry Puns. Welcome to the Punpedia entry on chemistry puns! 離諒 ...

  • Facts About Rubidium | Live Science

    Rubidium metal can be produced by reducing rubidium chloride with calcium among other methods. Rubidium forms four oxides: Rb 2 O, Rb 2 O 2, Rb 2 O 3, Rb 2 O 4. In 1997 the cost of this metal in small quantities was about US$ 25/gram.

  • Rubidium : Wikis (The Full Wiki)

    Alkali metals are the chemical elements in group one of the periodic system. They are silver-coloured when pure, soft and have only one valence electron.They like to make reactions in which they give up this single electron and then have a charge of +1. They react strongly with water and because of this, they have to be stored in petrol.Alkali metals are the first group in the periodic table.

  • Rubidium | Encyclopedia.com

    Oct 04, 2018· RUBIDIUM [symbol Rb, atomic weight 85⋅45 (O=16)], a metallic element belonging to the group of the alkali metals. It is found in the minerals lepidolite, petalite and in various specimens of mica and of carnal lite, and in some mineral waters.

  • Alkali metal Facts for Kids - Kiddle encyclopedia

    Rubidium is part of the alkali metal series which is group 1 in the periodic table. It has the color of silver and a melting point of 60 celsius. It is the 23rd most abundant element in the Earth's crust and it can also be found in the sea. It was discovered by German chemists in 1861 while they were looking through the mineral lepidolite.

  • Rubidium | definition of rubidium by Medical dictionary

    rubidium: [ roo-bid´e-um ] a chemical element, atomic number 37, atomic weight 85.47, symbol Rb. (See Appendix 6.) rubidium 82 a radioactive isotope of rubidium having a half-life of 1.273 minutes and decaying by positron emission. It is used as a tracer in positron emission tomography .

  • 1911 Encyclopædia Britannica/Rubidium - Wikisource, the ...

    rubidium (symbol Rb) Silver-white metallic element of the alkali metals (group I of the periodic table).It ignites spontaneously in air and can be liquid at room temperature. It was discovered in 1861 by the German chemist Robert Bunsen and the German physicist Gustav Kirchhoff.The element has few commercial uses; small amounts are used in photoelectric cells, vacuum-tube filaments, and batteries.

  • Rubidium - Simple English Wikipedia, the free encyclopedia

    Rubidium is a chemical element with the symbol Rb and atomic number 37. Rubidium is a very soft, silvery-white metal in the alkali metal group. Rubidium metal shares similarities to potassium metal and caesium metal in physical appearance, softness and conductivity. Rubidium cannot be stored under atmospheric oxygen, as a highly exothermic reaction will ensue, sometimes even resulting in the ...

  • Rubidium 82 | Article about rubidium 82 by The Free Dictionary

    Rubidium forms chemical compounds in only one oxidation state: +1.Some rubidium compounds have a mixed oxidation state, though. Rubidium chloride is the most common rubidium compound. Rubidium hydroxide and rubidium carbonate are also used commonly. Rubidium compounds makes a …

  • Rubidium-82 - WikiMili, The Free Encyclopedia

    Alkali metals are the chemical elements in group one of the periodic system. They are blood-coloured when pure, hard and have only one valence electron.They like to make reactions in which they give up this twin electron and then have a charge of +1. They react strongly with water and because of this, they have to be stored in oil. Alkali metals are the first group in the periodic table.

  • Isotopes_of_rubidium

    Rubidium is chemical element 37 on the periodic table.Its symbol is Rb.Its atomic mass is 85.47. It has 37 protons and 37 electrons.It is a soft silver colored metal.It was first discovered in 1861 by Robert Bunsen and Gustav Kirchoff in Heidelberg, Germany.

  • Rubidium-82 - Wikipedia

    Rubidium is paramagnetic. The Rb atom readily gives up the lone electron in its outer subshell; the electronic configuration is 5s 1. The electronegativity of rubidium is 0.89, and the first ionization potential is 4.176 electron volts. Rubidium is univalent (oxidation number + 1) in all of its compounds.

  • Rubidium - Wikipedia

    Rubidium is a chemical element with the symbol Rb and atomic number 37. Rubidium is a very soft, silvery-white metal in the alkali metal group. Rubidium metal shares similarities to potassium metal and caesium metal in physical appearance, softness and conductivity.

  • Rubidium - CreationWiki, the encyclopedia of creation science

    Caesium

  • Rubidium Facts for Kids - Kiddle encyclopedia

    From the solar system to the world economy to educational games, Fact Monster has the info kids are seeking. Our site is COPPA and kidSAFE-certified, so you can rest assured it's a safe place for kids to grow and explore.

  • Rubidium | Article about rubidium by The Free Dictionary

    Rubidium has a number of oxides, including Rb 6 O and Rb 9 O 2 which form if rubidium metal is exposed to air; the final product of reacting with oxygen is the superoxide RbO 2. Rubidium forms salts with most anions. Some common rubidium compounds are rubidium chloride (RbCl), rubidium monoxide (Rb 2 O) and rubidium copper sulfate Rb 2 SO 4 ...

  • Alkali metal - Simple English Wikipedia, the free encyclopedia

    Looking for online definition of rubidium or what rubidium stands for? rubidium is listed in the World's largest and most authoritative dictionary database of abbreviations and acronyms The Free Dictionary

  • Rubidium | chemical element | Britannica

    Rubidium (Rb) has 24 isotopes, with naturally occurring rubidium being composed of just two isotopes; Rb-85 (72.2%) and the radioactive Rb-87 (27.8%). Normal mixes of rubidium are radioactive enough to fog photographic film in approximately 30 to 60 days. Standard atomic mass is 85.4678(3) u ...