Can a radioactive element decay by emitting more than 1 particles at once?

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SUMMARY

Radioactive decay occurs exclusively through the emission of a single particle during a single event. For instance, a radioactive element like Uranium cannot simultaneously emit multiple particles, such as two beta particles and one alpha particle. In contrast, nuclear fission involves the splitting of a nucleus into two smaller nuclei, which can release multiple neutrons, typically averaging between two and three neutrons per fission event.

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Staight question :

Can a radioactive element decay by emmitting more than 1 particles at once? ie. can a radioactive Uranium decay 2 beta and 1 alpha particles at the same time, or it must decay 1 particle (eg beta), itself becomes another elements and then decay further?

thanks
 
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The short answer is no.

Radioactive decay is essentially exclusively by one particle (mode) during a single event.

In the case of fission, where the nuclear breaks apart into two nuclei, a number of neutrons are also released. The number of neutrons varies between 2 or 3, with the average value in between.
 

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