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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.
Abundance (atom fraction) of the chemical elements in Earth's upper continental crust as a function of atomic number; [5] siderophiles shown in yellow Graphs of abundance against atomic number can reveal patterns relating abundance to stellar nucleosynthesis and geochemistry.
This is an accepted version of this page This is the latest accepted revision, reviewed on 19 January 2025. Periodic table of the elements with eight or more periods Extended periodic table Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon Potassium Calcium Scandium Titanium Vanadium Chromium ...
Heavy metals is a controversial and ambiguous term [2] for metallic elements with relatively high densities, atomic weights, or atomic numbers.The criteria used, and whether metalloids are included, vary depending on the author and context and has been argued should not be used.
The rubidium content in minerals is often calculated and quoted in terms of Rb 2 O. In reality, the rubidium is typically present as a component of (actually, an impurity in) silicate or aluminosilicate. A major source of rubidium is lepidolite, KLi 2 Al(Al,Si) 3 O 10 (F,OH) 2, wherein Rb sometimes replaces K. Rb 2 O is a yellow colored solid.
These are compounds that include rubidium, most possibly in +1 ion form. Pages in category "Rubidium compounds" The following 34 pages are in this category, out of 34 ...
Emerald, colored green with trace amounts of chromium, is a variety of the mineral beryl which is beryllium aluminum silicate. Most beryllium is extracted from beryllium hydroxide. One production method is sintering , done by mixing beryl , sodium fluorosilicate , and soda at high temperatures to form sodium fluoroberyllate, aluminum oxide ...
Rubidium–strontium dating This page was last edited on 15 April 2021, at 14:35 (UTC). Text is available under the Creative Commons Attribution-ShareAlike 4.0 ...