Radium

Synonyms: None

Symbol: Ra

Atomic mass: 226 g/mol (atomic weight of the most abundant isotope)

Radium is element number 88 in the Periodic Table. Valency number: 2. Radium is radioactive, by its decay alpha-particles is produced. Electronegativity: 0.9.

MP= 700 ^o C; BP= 1737 ^o C; density: ≈ 5000 g/m³; CAS-number: 7440-14-4;

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