actinon

ac·ti·non

A0069900 (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) n1. (Elements & Compounds) a radioisotope of radon that is a decay product of radium. Symbol: An or ²¹⁹Rn; atomic no: 86; half-life: 3.92s2. (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]

Thesaurus

Noun

actinon - any of a series of radioactive elements with atomic numbers 89 through 103actinide, actinoidgroup, grouping - any number of entities (members) considered as a unit

actinon

(ăk`tənŏn'): see radonradon
, gaseous radioactive chemical element; symbol Rn; at. no. 86; mass no. of most stable isotope 222; m.p. about −71&degC;; b.p. −61.8&degC;; density 9.73 grams per liter at STP; valence usually 0. Radon is colorless and the most dense gas known.
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actinon

[′ak·tə‚nän] (nuclear physics) A radioactive isotope of radon, symbol An, atomic number 86, atomic weight 219, belonging to the actinium series. Also known as actinium emanation (Ac-Em).

actinon

actinium emanation

A radioisotope associated with actinium identified in 1904, which has a half-life of 3.96 seconds and correspond to 219Rn.

actinon

(ak′tĭ-non″) [ actinium] A chemically inert, short-lived isotope of actinium.

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actinon

Related to actinon: radium emanation

noun

Synonyms for actinon

noun any of a series of radioactive elements with atomic numbers 89 through 103

Synonyms

actinide
actinoid

Related Words

group
grouping

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