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Identify the Nuclide That Has the Longest Half-Life $\begin{array} { c } 235 \\92\end{array}$

Question 9

Multiple Choice

Identify the nuclide that has the longest half-life.

A) $\begin{array} { c } 235 \\92\end{array}$ U
B) 14
6 C
C) $\begin{array} { c } 220 \\86\end{array}$ Rn
D) 219
90 Th
E) $232$
90 Th

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