metallic element,
metal any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
= synonym
= antonym
= relatert ord
Wiktionary
Substantiv
radium -
A radioactive metallic chemical element symbol Ra with an atomic number of 88.
Wikipedia
Radium is a radioactive chemical element which has the symbol Ra and atomic number 88. Its appearance is almost pure white, but it readily oxidizes on exposure to air, turning black. Radium is an alkaline earth metal that is found in trace amounts in uranium ores.
OmegaWiki Dictionary
Ω
radium Chemical element with symbol Ra and atomic number 88, silvery white alkaline earth metal.
