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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).

Element Radium (Ra), Group 2, Atomic Number 88, s-block, Mass [226]. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.

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.

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.

Radium is a chemical element of the periodic table with chemical symbol Ra and atomic number 88 with an atomic weight of 226 u and is classed as alkaline earth metal and is part of group 2 (alkaline earth metal). Radium is solid at room temperature.

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

2023年11月11日 · 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 …

2024年9月1日 · Radium element is in group 2 and period 7 of the Periodic table. Radium is the s-block element and it belongs to alkaline earth metals group. Click on above elements (in Periodic table) to see their information. Why is Radium in Group 2?

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.