Atomic structure

    Cards (12)

    • What is the approximate radius of an atom?
      1×1010 m1 \times 10^{-10} \text{ m}
    • How does the radius of the nucleus compare to that of the atom?
      The nucleus is less than 1/1000th the radius of the atom
    • Where is most of the mass of the atom concentrated?
      In the nucleus
    • What two particles are found in the nucleus?
      Protons and neutrons
    • What charge do protons have?
      Positive charge
    • What charge do neutrons have?
      No charge
    • What is the overall charge of the nucleus?
      Overall positive charge
    • What charge do electrons have?
      Negative charge
    • Where are electrons found in an atom?
      In energy levels around the nucleus
    • How does the energy of an electron relate to its distance from the nucleus?
      Further energy levels have higher energy
    • What happens to an electron when it absorbs electromagnetic radiation?
      It moves from a lower to a higher energy level
    • What occurs when an electron emits electromagnetic radiation?
      It returns to a lower energy level
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