yasioTifflemilimal yasioTifflemilimal

24-12-2015
Chemistry

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Which particle is emitted when an atom of 85Kr spontaneously decays?
(1) an alpha particle (3) a neutron
(2) a beta particle (4) a proton

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littlexavier littlexavier

24-12-2015

The right answer is 2. A beta particle

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