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actinon

(ak′tə nän′)

noun

a gaseous radioisotope of radon, formed by disintegration of actinium: at. no., 86; at. wt., 219; half-life of 3.92 seconds

Origin: ModL < actinium + -on

See actinon in American Heritage Dictionary 4

noun

A radioactive, inert, gaseous isotope of radon, with a half-life of 3.92 seconds.

Origin:

Origin: actin(ium)

Origin: + -on²

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