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mr Goodwill [35]
3 years ago
8

HELP FAST GIVING BRAINLIEST!!

Chemistry
2 answers:
STALIN [3.7K]3 years ago
8 0
The answer may be 3 but I don’t actually know
oee [108]3 years ago
7 0
#84 is polonium which is radioactive which means that 84 and up are radioactive
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