Radium-226 Decays into Radon-222 Plus an Alpha Particle ${}^{4}_{2}$ He: 4002603 U

question 154

Multiple Choice

Radium-226 decays into radon-222 plus an alpha particle.The relevant masses are ${}^{4}_{2}$ He: 4.002603 u ${}^ { 222 }_ { 86 }$ Rn: 222.017570 u $^{226}_{88} Ra$ : 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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Definitions:

Erection

The physiological process of the penis or clitoris becoming enlarged and firm, often in response to sexual arousal.

Penis

The external sexual organ in males through which urine and semen are discharged.

Perineum

The perineum is the region in the body between the anus and the genitals, playing a key role in various functions including the support of pelvic floor structures.

Urogenital Triangle

The anterior part of the perineal region in both males and females, containing the external genital organs and the opening of the urethra.