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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 ).
Jul 4, 2024 · Radium is a radioactive chemical element that is the heaviest of the alkaline-earth metals of the periodic table. Radium is a silvery white metal that does not occur free in nature.
Element Radium (Ra), Group 2, Atomic Number 88, s-block, Mass [226]. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.
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Oct 14, 2016 · Radium is the heaviest alkaline earth metal, according to Encyclopedia. The other alkali earth metals include beryllium, magnesium, calcium, strontium and barium. Radium changes from a silvery...
Dec 19, 2018 · Among a slew of papers that the Curies published in the years after its discovery, one radium could treat cancer by killing cancer cells more quickly than healthy cells.
Nov 11, 2023 · Radium is a chemical element with the symbol Ra and atomic number 88. It is an alkaline earth metal and is the heaviest of the alkaline earth metals. Radium was discovered in 1898 by Marie and Pierre Curie from a uranium ore called pitchblende.
