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Radium is a chemical element; it has symbol Ra and atomic number 88. It is the sixth element in group 2 of the periodic table, also known as the alkaline earth metals. Pure radium is silvery-white, but it readily reacts with nitrogen (rather than oxygen) upon exposure to air, forming a black surface layer of radium nitride (Ra 3 N 2).
Like the periodic table, the list below organizes the elements by the number of protons in their atoms; it can also be organized by other properties, such as atomic weight, density, and electronegativity. For more detailed information about the origins of element names, see List of chemical element name etymologies.
The alkaline earth metals are six chemical elements in group 2 of the periodic table. They are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). [ 1 ] The elements have very similar properties: they are all shiny, silvery-white, somewhat reactive metals at standard temperature and pressure .
The periodic table, elements being denoted by their symbols. Chemical symbols are the abbreviations used in chemistry, ... Radium: 88: Current symbol is Ra. [nb 1] Rf:
{{Infobox element}}; labels & notes: (Image) GENERAL PROPERTIES Name Symbol Pronunciation (data central) Alternative name(s) Allotropes Appearance <element> IN THE PERIODIC TABLE Periodic table Atomic number Standard atomic weight (data central) Element category (also header bg color) (sets header bg color, over 'series='-color) Group Period ...
The periodic table, ... Radium: Actinium: Thorium: Protactinium: Uranium: ... Periodic tables usually at least show the elements' symbols; many also provide ...
Atomic number, Element, and Symbol all serve independently as unique identifiers. Element names are those accepted by IUPAC. Block indicates the periodic table block for each element: red = s-block, yellow = p-block, blue = d-block, green = f-block. Group and period refer to an element's position in the
Contraction of radium emanation, since the element appears in the radioactive decay of radium. · Former name niton (Nt), from Latin nitens "shining", because of the radioluminescence of radon. Francium (Fr) 87 France: French toponym Named for France (literally: "Land of the Franks"), where it was discovered (at the Curie Institute, Paris ...