Bismuth $\begin{array} { c } 212 \\83\end{array}$ Bi Is Known to Be Radioactive

question 23

Multiple Choice

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

Purkinje Fibers

Specialized fibers in the heart's ventricles that help coordinate the heart's contractions by conducting electrical impulses.

Repolarization

The process by which cells, especially heart and nerve cells, restore their membrane potential to a resting state after depolarization.

Electrocardiogram

A diagnostic test that measures the electrical activity of the heart to assess its health and functionality.

Electrodes

Conductive materials that allow the flow of electrical current into or out of a medium, used in various electronic devices and medical applications.