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Rutherford proposes that radioactivity involves a transmutation of one element onto another.
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Rutherford proposes that radioactivity involves a transmutation of one element onto another, doesn't he?
Does Rutherford propose that radioactivity involves a transmutation of one element onto another?
Does Rutherford propose that radioactivity involves a transmutation of one element onto another or no?
Who proposes that radioactivity involves a transmutation of one element onto another?
What Rutherford proposes?
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What does Rutherford propose?
 END of ANSWER ====================================
 ANSWER ====================================
Rutherford proposed that radioactivity involves a transmutation of one element onto another, didn't he?
Did Rutherford propose that radioactivity involves a transmutation of one element onto another?
Did Rutherford propose that radioactivity involves a transmutation of one element onto another or no?
Who proposed that radioactivity involves a transmutation of one element onto another?
What Rutherford proposed?
 END of ANSWER ====================================
	 
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