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