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Atomic Structure

QuestionAnswer
Who used alpha particles to find that an atom had a strong positive nucleus? Ernest Rutherford
Who predicted that atoms could not be divided any further? John Dalton
Who discovered the neutron? Henry Mosely
What is the definition of an Isotope? Atoms of the same element with different numbers of neutrons.
What is meant by atomic number? The number of protons in the nucleus.
What is the mass of an electron? 1/1800
What is the definition of ion? A positively or negatively charged atom.
Created by: stu038078
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