Radium-226 Decays into Radon-222 Plus an Alpha Particle

question 93

Multiple Choice

Radium-226 decays into radon-222 plus an alpha particle.The relevant masses are
He: 4.002603 u
Rn: 222.017570 u
Ra: 226.025402 u
How much energy is released in this process? (1 u = 931.5 MeV/c²)

• A)4.24 MeV
• B)3.76 MeV
• C)4.87 MeV
• D)5.05 MeV
• E)5.39 MeV

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