Bismuth ${}^{212}_{83}$ Bi Is Known to Be Radioactive ${}^{212}_{83}$ Bi with Respect to Alpha,beta-Plus and Beta-Minus Decay Is to {}^{212}_{83}

question 74

Multiple Choice

Bismuth ${}^{212}_{83}$ Bi is known to be radioactive.The stability of ${}^{212}_{83}$ Bi with respect to alpha,beta-plus and beta-minus decay is to be determined.The following atomic masses are known: ${}^{4}_{2}$ He: 4.002603 u $^{208}_{81} T$ l: 207.981998 u $^{212}_{82} Pb$ : 211.991871 u ${}^{212}_{83}$ Bi: 211.991255 u 212 84 Po: 211.988842 u The ${}^{212}_{83}$ Bi nucleus is

• A)subject to alpha decay only.
• B)subject to beta-plus decay only.
• C)subject to beta-minus decay only.
• D)subject to alpha or beta-plus decay, but not beta-minus decay.
• E)subject to alpha or beta-minus decay, but not beta-plus decay.

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