Study

Electronic Configuration

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  • What are the orbits (in which electrons sit) around the nucleus called?
    Electron shells
  • Who is the shell model of electrons named after?
    Niels Bohr
  • What is wrong with the atom in the given diagram?
    No electrons in first shell/too many electrons in third shell
  • Which type of gases have a full outermost electron shell? ("_ _ _ _ _ gases")
    Noble gases
  • Which atom is this?
    Sodium
  • How many electrons can the second level hold?
    8
  • When the outermost electron level is full, the element is _ _ _ _ _ _?
    stable
  • How many electrons can the third level hold?
    18
  • How many electrons does this atom have in its valence (outermost) shell?
    7
  • Which atom is this?
    Oxygen
  • Elements that have 7 valence electrons are part of which group on the periodic table?
    Halogens (Group 7)
  • What are the electrons in the outermost shell known as? ("_ _ _ _ _ _ _ electrons")
    Valence Electrons
  • How many electrons can the first level hold?
    2
  • What are the four letters that represent electron sub-levels?
    s; p; d; f