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Questions and Answers
What is the basic unit of an element?
Which subatomic particle has a negative charge?
What is the dense, positively charged center of an atom called?
Which scientist proposed the planetary model of the atom?
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What is the total number of subatomic particles in an atom?
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What is the charge of the subatomic particle found in the nucleus of an atom?
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Which subatomic particle determines the identity of an element?
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What is the approximate mass ratio of a proton to an electron?
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