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 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. [Rn]7s 2. J.C. Slater, J Chem Phys, 1964, 41 (10), 3199-3205. DOI:10.1063/1.1725697.

Atomic mass of Radium is 226 u. The atomic mass is the mass of an atom. The atomic mass or relative isotopic mass refers to the mass of a single particle, and therefore is tied to a certain specific isotope of an element.

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.

Basic Information Name: Radium Symbol: Ra Atomic Number: 88 Atomic Mass: (226.0) amu Melting Point: 700.0 °C (973.15 K, 1292.0 °F) Boiling Point: 1737.0 °C (2010.15 K, 3158.6 °F) Number of Protons/Electrons: 88 Number of Neutrons: 138 Classification: Alkaline Earth Crystal Structure: Cubic Density @ 293 K: 5.0 g/cm 3 Color: silverish Atomic ...

Atomic Data for Radium (Ra) Atomic Number = 88 Atomic Weight = 226.0254 Reference E95

Radium is a chemical element with 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 almost colorless, but it readily combines with nitrogen (rather than oxygen) on exposure to air, forming a black surface layer of radium nitride (Ra3N2).

Radium (Ra) has an atomic mass of 88. Find out about its chemical and physical properties, states, energy, electrons, oxidation and more.

2020年11月21日 · Atomic mass of Radium is 226 u. The atomic mass is the mass of an atom. The atomic mass or relative isotopic mass refers to the mass of a single particle, and therefore is tied to a certain specific isotope of an element.