August 2018 1 20 Report
Uzupełnij równania przemian promieniotwórczych.
a) ²³⁸₉₂U -> ..... + ⁴₂He
b) ²¹⁵₈₃Bi -> ²¹⁵₈₄Po + .....
c) ..... -> ²¹⁹₈₆Rn + ⁴₂He
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