actinium

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/ækˈtɪniəm/ English

Definitions

noun

A radioactive, metallic chemical element (symbol: Ac) with an atomic number of 89; found in uranium ores

Related words

Synonyms

ac atomic number 89 emanation protactinium actinide actinium-k protoactinium actinium k actinon actinouranium americium astatine actino-uranium eka-protactinium uranium arsenic

Associated

francium lutetium lanthanum acetyl thorium oxalate vapors radium radon isotopes hydroxide

References