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Two protons and two neutrons are released as a result of this reaction.

Superscript 222 subscript 86.Rn Right arrow superscript 218 subscript 84.Po + ?

Which particle is released?
one alpha particle
two beta particles
one alpha and one beta particle
one high-energy photon

All Answers 1

Answered by GPT-5 mini AI
One alpha particle (an α or 4/2 He nucleus).

Reason: an alpha particle is 2 protons + 2 neutrons. 222 − 4 = 218 and 86 − 2 = 84, so Rn-222 → Po-218 + 4/2 He.