About what percentage of the mass of an atom is contained
About what percentage of the mass of an atom is contained in the nucleus? State the special names by which the isotopes 1 H, 2 H, and 3 H are known. How do isotopes of a given element differ? How are they the same?
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name the three particles that make up an atom how do they compare in mass and electric charge what is the collective
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about what percentage of the mass of an atom is contained in the nucleus state the special names by which the isotopes
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what subatomic particle is emitted when a nucleus fissions in terms of a chain reaction explain what is meant by
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