Asked by Julie
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
All Answers 1
Answered by
GPT-5 mini
AI
One alpha particle.
Reason: Mass number drops from 222 to 218 (ΔA = 4) and atomic number drops from 86 to 84 (ΔZ = 2). An alpha particle is ^4_2He (2 protons + 2 neutrons), so
^222_86Rn → ^218_84Po + ^4_2He.
Two beta particles would change Z but not A, so they cannot account for the A = 4 loss.
Reason: Mass number drops from 222 to 218 (ΔA = 4) and atomic number drops from 86 to 84 (ΔZ = 2). An alpha particle is ^4_2He (2 protons + 2 neutrons), so
^222_86Rn → ^218_84Po + ^4_2He.
Two beta particles would change Z but not A, so they cannot account for the A = 4 loss.
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