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).

Apr 8, 2025 · radium (Ra), radioactive chemical element, the heaviest of the alkaline-earth metals of Group 2 (IIa) of the periodic table. Radium is a silvery white metal that does not occur free in nature. (Read Marie Curie’s 1926 Britannica essay on radium.)

Radium is a chemical element with symbol Ra and atomic number 88. Classified as an alkaline earth metal, Radium is a solid at room temperature.

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.

Oct 14, 2021 · Radium | Ra | CID 6328144 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.

Oct 14, 2023 · Radium is a chemical element with an atomic number of 88 and is represented by the symbol ‘Ra’ in the periodic table. It is silvery-white in appearance classified as alkaline earth metal and belongs to group 2 of the periodic table.

Radium is silvery, lustrous, soft and radioactive element. Its atomic symbol Ra, atomic number 88, atomic weight 226, solid at room temperature. Melting point 700 C and boiling point 1140 C. It is 6 th element in group 2 of periodic table. Radium has density 5.5g/cm 3 higher than barium.

2 days ago · Radium Ra 223 dichloride (Xofigo®) is an alpha-emitting radiopharmaceutical medication. The alpha particles target cancer cells in the bones, delivering radiation directly to the tumor. The radiation damages the DNA of the tumor cells, causing them to die or stop growing. Because the radiation is given directly to the tumor, the damage to ...

Jan 21, 2025 · Radium is a radioactive chemical element with the symbol Ra and atomic number 88. It’s a heavy, silvery-white metal, part of the alkaline earth metal group, and is highly radioactive. Discovered by Marie and Pierre Curie in 1898, radium emanates a faint blue glow, a property that has historically fascinated scientists and the public alike.

Radium is the 88th element in the periodic table and has a symbol of Ra and atomic number of 88. It has an atomic weight of (226) and a mass number of 201. Radium has eighty-eight protons and one hundred thirteen neutrons in its nucleus, and eighty-eight electrons in seven shells.