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General Chemistry: Atoms, Molecules & Ions

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Terms in this set (4)

  • What is the atomic number of an atom?

    The atomic number is the number of protons in the nucleus of an atom.

  • What does the mass number of an atom represent?

    The mass number is the sum of the number of protons and neutrons in the nucleus.

  • What subatomic particles make up the nucleus of an atom?

    The nucleus is made up of protons and neutrons.

  • Does the nucleus make up most of the volume of an atom?

    No, the nucleus contains most of the mass but very little of the volume of an atom.