Uzupełnij równanie ręakcji
211 Po------>α+......
²¹¹Po------> α+ ²⁰⁷Pb
²¹¹₈₄Po-->α+²⁰⁷₈₂Pb
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²¹¹Po------> α+ ²⁰⁷Pb
²¹¹₈₄Po-->α+²⁰⁷₈₂Pb