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

question 37

Multiple Choice

Radium-226 decays into radon-222 plus an alpha particle. How much energy is released in this process? 1 u = 931.494 MeV/c². The relevant mass values are:
, 4.002603 u; , 222.017570 u; , 226.025402 u.

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

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