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Which of the following atoms has the greatest electron affinity (largest positive value) ?


A) S
B) P
C) Ga
D) Li
E) Br

F) A) and B)
G) D) and E)

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The law of octaves was proposed by


A) G.N.Lewis.
B) John Newlands.
C) Dmitri Mendeleev.
D) J.J.Thompson.
E) Ernest Rutherford.

F) B) and D)
G) A) and B)

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The chief contribution of physicist Henry Moseley to atomic theory was


A) the discovery of the periodic law.
B) the determination of the charge of the proton.
C) the measurement of the atomic numbers of the elements.
D) the scientist who determined the electric charge of the electron.
E) the discovery of the law of octaves.

F) A) and C)
G) A) and B)

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Which of the elements listed below has the following pattern for its first six ionization energies? (I1 = first ionization energy, I2 = second ionization energy, etc.) Which of the elements listed below has the following pattern for its first six ionization energies? (I<sub>1</sub> = first ionization energy, I<sub>2</sub> = second ionization energy, etc.)    A) Ca B) Si C) Al D) Se E) P


A) Ca
B) Si
C) Al
D) Se
E) P

F) A) and B)
G) C) and E)

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In what row and group of the periodic table would you find the element with the electron configuration [Kr]5s24d105p2?


A) row 4, group 4A
B) row 4, group 5A
C) row 5, group 4A
D) row 5, group 5A
E) none of the above

F) C) and E)
G) B) and C)

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As opposed to early periodic tables based on the law of octaves, modern periodic tables arrange the elements in order of increasing


A) nuclear binding energy.
B) number of neutrons.
C) atomic mass.
D) atomic number.
E) atomic size.

F) A) and B)
G) C) and D)

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The electron configuration of the outermost electrons of atoms of the halogen group is ns2np7.

A) True
B) False

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The first ionization energy of mercury is 1006 kJ/mol. The energy change for the reaction Hg(l) β†’\rarr Hg+(g) + e- is therefore


A) 1006 kJ/mol.
B) greater than 1006 kJ/mol.
C) less than 1006 kJ/mol.
D) is equal to the electron affinity of mercury.
E) is equal to the second ionization energy of mercury.

F) B) and E)
G) C) and D)

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If the radius of atom X is greater than the radius of atom Y, then it is also likely that


A) X has a larger electron affinity than Y does.
B) X has a larger effective nuclear charge than Y does.
C) X has greater metallic character than Y does.
D) X has a larger first ionization energy than Y does.
E) X is a poorer conductor of electricity than Y when in the solid state.

F) A) and E)
G) B) and D)

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Which one of the following pairs are isoelectronic?


A) Mn2+ and Ar
B) Zn2+ and Cu2+
C) Na+ and K+
D) Cl- and S
E) K+ and Cl-

F) All of the above
G) C) and D)

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The representative elements are those with unfilled energy levels in which the "last electron" was added to


A) an s orbital.
B) an s or p orbital.
C) a d orbital.
D) a p or d orbital.
E) an f orbital.

F) B) and C)
G) A) and E)

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For phosphorus atoms, which ionization energy will show an exceptionally large increase over the previous ionization energy?


A) 2nd
B) 3rd
C) 4th
D) 5th
E) 6th

F) A) and D)
G) B) and E)

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Sodium ions are more reactive than sodium atoms.

A) True
B) False

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Which of the following make an isoelectronic pair: Cl-, O2-, F, Ca2+, Fe3+?


A) Ca2+ and Fe3+
B) O2- and F
C) F and Cl-
D) Cl- and Ca2+
E) None of the above.

F) B) and E)
G) C) and D)

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Consider the following reaction: 3Li + Z β†’\rarr Li3Z.What is a reasonable guess for the identity of element Z?

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Nitrogen, or other e...

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Which of the following is an acidic oxide?


A) P4O10
B) MgO
C) Fe2O3
D) K2O
E) Cr2O3

F) A) and C)
G) All of the above

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Write the ground-state electron configuration for Br-.

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Which of the following is a basic oxide?


A) NO2
B) H2O
C) Na2O
D) SnO
E) SO2

F) A) and C)
G) B) and C)

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Which of the following elements has the greatest metallic character?


A) Br
B) Se
C) Ni
D) As
E) Si

F) C) and D)
G) B) and D)

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