Aprutun

Aprutun yesɛa taɛekkemt tufrirt n 1.602 x 10. Akked tkura n 1.67 × 10 i meqqret 1837 n tikkal ɣef tin n uliktrun.

Deg useggas n 1972 yufa umesfizik Ernest RutherfordPetrucci, R. H.; Harwood, W. S.; Herring, F. G. (2002). General Chemistry (8th ed.). Upper Saddle River, N.J. : Prentice Hall. sb. 41. ISBN 978-0-13-033445-9. aprutun.

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