Radium-226 Decays into Radon-222 Plus an Alpha Particle $\begin{array} { l } 4 \\2\end{array}$

question 123

Multiple Choice

Radium-226 decays into radon-222 plus an alpha particle. The relevant masses are $\begin{array} { l } 4 \\2\end{array}$ He: 4.002603 u $\begin{array} { c } 222 \\86\end{array}$ Rn: 222.017570 u $\begin{array} { c } 226 \\88\end{array}$ 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

Describing the process and importance of transpiration in plants.

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