Atoms, Elements and Electronic Structure

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  • Atoms, Elements and Electronic Structure
    • Elements
      • A substance that is made of only one sort of atom
    • Atoms
      • Smallest particles of an element
      • Have a small central nucleus
        • Made of protons and neutrons
        • Surrounded by shells of electrons
      • Protons +1
      • Neutrons 0
      • Electrons -1
      • Number of electrons is equal to number of protons - no overall charge
    • Electronic Structure
      • Electrons occupy particular energy levels
      • Shells closest to the nucleus are at the lowest energy levels
      • If a shell is full the element is known as stable

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