When polonium-218 decays, it emits a beta particle followed by an alpha particle. The resulting isotope is :

lead-214

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bismuth-214

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lead-222

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bismuth-212

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astatine-212

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Solution

The correct option is B bismuth-214
When polonium-218 decays, it emits a beta particle followed by an alpha particle. The resulting isotope is Bismuth-214.
$_{84}^{218} P o \to_{85}^{218} A t +_{- 1}^{0} β \to_{83}^{214} B i +_{2}^{4} H e$

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