actinon
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Related to actinon: radium emanation
ac·ti·non
(ăk′tə-nŏn′)n.
A radioactive isotope of radon, Rn-219, having a half-life of 3.96 seconds and produced by the disintegration of actinium.
[actin(ium) + -on.]
actinon
(ˈæktɪˌnɒn)n
1. (Elements & Compounds) a radioisotope of radon that is a decay product of radium. Symbol: An or 219Rn; atomic no: 86; half-life: 3.92s
2. (Elements & Compounds) another name for actinide
[C20: New Latin, from actinium + -on]
ac•ti•non
(ˈæk təˌnɒn)n.
a chemically inert, gaseous, short-lived isotope of radon. Symbol: An; at. no.: 86; at. wt.: 219.
[1925–30]
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