Exam III Review

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Exam III Review

• Chemistry 1211
• Dr. Clower

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• 1. The lowest frequency available on a radio's AM
  dial is 570 kHz. What is the wavelength of this
  light?
• 1.8 x 10-7 m
• 1.8 x 10-6 m
• 1.9 x 10-3 m
• 5.3 x 102 m
• 5.3 x 104 m

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• 2. All of the following statements are false
  EXCEPT
• The wavelength of light is directly proportional
  to its frequency
• The frequency of light is inversely proportional
  to its energy
• The energy of a photon of light is inversely
  proportional to its wavelength
• The frequency of light is directly proportional
  to the speed of light (in a vacuum)
• The wavelength of light is directly proportional
  to the speed of light (in a vacuum)

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• 3. The Pauli Exclusion Principle states that
• No two electrons from a given atom can have the
  same spin
• No two electrons from a given atom can have the
  same four quantum numbers
• Two electrons can occupy an orbital if they have
  the same spin
• Two electrons can occupy an orbital if they have
  opposite spins
• Two electrons can occupy an orbital if they have
  opposite charges

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• 4. All of the following sets of quantum numbers
  are allowed EXCEPT
• n 1, l 0, ml 1, ms - ½
• n 2, l 1, ml 0, ms ½
• n 3, l 1, ml -1, ms - ½
• n 4, l 3, ml -1, ms - ½
• n 6, l 3, ml -3, ms ½

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• 5. What is the total capacity of electrons in n
  3?
• 5
• 10
• 18
• 32
• 50

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• 6. What type of orbital is designated by n 5, l
  2, ml 1?
• 5d
• 2f
• 5p
• 2s
• 2p

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• 7. What is the ground state electron
  configuration of 94Pu?
• Xe5f66s2
• Xe6f67s2
• Rn6f67s2
• Rn5f67s2
• Rn5f66d107s2

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• 8. What is the electron configuration of Cu?
• Ar3d8
• Ar3d9
• Ar3d10
• Ar3d84s2
• Ar3d94s1

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• 9. Hund's Rule predicts that
• The most stable electronic structure of an atom
  has electron spins paired
• No two electrons will share the same orbital
• Electrons in an orbital have equal but opposite
  charges
• Electrons must have opposite spins to share an
  orbital
• When several orbitals of equal energy are
  available, as in a given subshell, electrons
  enter singly with parallel spins

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• 10. What is the symbol of the atom or ion with
  the following orbital diagram?
• (??) (??) (??)(??)(??) (??) (??)(??)(??)
  (??)(??)(??)(? )(? ) ( )
• 1s 2s 2p 3s 3p
  3d 4s
• 26Fe
• 26Fe2
• 27Co
• 28Ni
• 28Ni2

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• 11. Which of the following elements or ions are
  paramagnetic in the ground state?
• Cl-
• Fe2
• Ne
• Ca2
• Sc3

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• 12. In general, ionization energies
• Increase down a group and increase across a
  period
• Increase down a group and decrease across a
  period
• Decrease down a group and increase across a
  period
• Decrease down a group and decrease across a
  period
• Increase with atomic mass and increase with
  atomic radii

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• 13. Place the following atoms in order of
  increasing size Ba, Ca, Mg, Na, and Rb
• Na lt Mg lt Ca lt Rb lt Ba
• Mg lt Na lt Ca lt Rb lt Ba
• Na lt Rb lt Mg lt Ca lt Ba
• Ba lt Rb lt Ca lt Mg lt Na
• Ba lt Rb lt Ca lt Na lt Mg

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• 14. Place the following atoms or ions in order of
  increasing radius O, O2-, S2-, and Se2-
• O2- lt O lt S2- lt Se2-
• Se2- lt S2- lt O2- lt O
• O2- lt O lt Se2- lt S2-
• Se2- lt S2- lt O lt O2-
• O lt O2- lt S2- lt Se2-

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• 15. Which of the following atoms would have the
  largest second ionization energy?
• Na
• Ca
• Mg
• Ba
• Sr