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Chemistry, 14.12.2020 17:40 StupidFatChipmunk

Which reaction is an example of natural transmutation?
(1) 239/94 Pu ->235/92 U + 4/2 He
(2) 27/13 Al + 2/4 He ->30/15 P + 1/0 n
(3) 238/92 U + 1/0 n → 239/94 Pu +2 0/-1e
(4) 239/94 Pu 1/0 n → 147/56 Ba + 147 56Sr + 3 1/0 N

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Which reaction is an example of natural transmutation?
(1) 239/94 Pu ->235/92 U + 4/2 He
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