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Unit 2 Review

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  • How many valence electrons does O have?
    6
  • What does the circled number represent?
    Charge
  • "How much energy it takes to remove an electron" defines what term?
    Ionization Energy
  • Elements in the same _______ have the same properties
    group
  • How many valence electrons does Rb have?
    1
  • What is the name of elements in Group 17?
    Halogens
  • What is the name of elements along the staircase?
    Metalloids
  • What scientist proposed Atomic Theory?
    Democritus
  • "Distance from the nucleus to the outer shell" defines what term?
    Atomic radius
  • What are the three subatomic particles?
    Protons, Neutrons, and Electrons
  • Ions have the same # of protons, but a different # of ____________
    Electrons
  • How many valence electrons does Al have?
    3
  • What does the circled number represent?
    Atomic Number
  • How many electrons does this element have?
    18
  • Isotopes have the same # of protons, but a different # of _________
    Neutrons
  • What scientist discovered electrons are in electron clouds in different orbitals?
    Schrodinger
  • How many valence electrons does Xe have?
    8
  • How many protons does this element have?
    17
  • How many valence electrons does Br have?
    7
  • How many neutrons does this element have?
    18
  • What is the name of elements in Group 18?
    Noble Gases
  • "How tight elements hold their shared electrons" defines what term?
    Electronegativity
  • How many valence electrons does P have?
    5
  • What element has the largest atomic radius?
    Francium (Fr)
  • What does the circled number represent?
    Atomic Mass
  • What scientist discovered electrons using the Cathode Ray Experiment?
    Thomson
  • What element has the greatest ionization energy?
    Helium (He)
  • "How much an element wants another electron" defines what term?
    Electron affinity
  • What scientist stated electrons travel around the nucleus in fixed orbits?
    Bohr
  • What is the name of elements in Groups 3-12?
    Transition Metals
  • What element has the greatest electron affinity?
    Fluorine (F)
  • What scientist discovered the nucleus using the Gold Foil Experiment?
    Rutherford
  • How many valence electrons does C have?
    4
  • What element has the greatest electronegativity?
    Flourine (F)
  • How many valence electrons does Sr have?
    2
  • What is the name of elements in group 2?
    Alkaline Earth Metals
  • What is the name of elements in Group 1?
    Alkali Metals