Which of the following elements occurs naturally radioactive?
A. Aluminum
B. Gold
C. Radium
D. Sodium
Radium occurs naturally radioactive.
Expert answered|
Jay901|Points 1335|
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Asked 3/27/2013 10:25:27 AM
Updated 14 days ago|9/19/2023 8:53:55 PM
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matahari [9/19/2023 8:53:50 PM]
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