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Which of the following elements would be expected to have chemical and physical properties most similar to those of the krypton (Kr) ?


A) neon (Ne)
B) gallium (Ga)
C) sodium (Na)
D) tin (Sn)
E) chlorine (Cl)

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

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The element whose atoms in the ground state have two half-filled orbitals is


A) K.
B) Be.
C) Tl.
D) O.
E) As.

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

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What is the ground-state electron configuration of sulfur (S) ?


A) [Ne]3s33p3
B) [Ar]3s23p4
C) [Ar]3p6
D) [Ne]3s23p4
E) [Ne]3p6

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

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Which of the following may represent an excited-state electron configuration for a cobalt atom?


A) [Ar]3d54s1
B) [Ar]3d64s2
C) [Ar]3d84s1
D) [Ar]3d64s1
E) [Ar]3d74s2

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

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Which of the following properties,in general,increases from left to right across a period in the periodic table?


A) ionic charge
B) atomic radius
C) density
D) ionization energy
E) metallic character

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

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Which of the following statements is incorrect?


A) A p-block main-group element belonging to period n has a completely filled (n - 1) d subshell.
B) All noble gases have completely filled shells.
C) All s-block main-group elements have only one or two valence electrons.
D) Carbon and silicon have the same number of valence electrons.
E) All elements in the n = 4 period have a partially or completely filled n = 4 shell.

F) A) and B)
G) None of the above

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According to the building-up principle or aufbau principle,which subshell is typically filled next after the 5f subshell?


A) 6d
B) 4p
C) 7s
D) 3d
E) 5s

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

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An atom of which of the following elements has the largest atomic radius?


A) F
B) N
C) Li
D) O
E) C

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

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Which of the following orbital diagrams represents a paramagnetic atom? 1s 2s 2p


A) Which of the following orbital diagrams represents a paramagnetic atom? 1s 2s 2p A) B) C) D) E) Which of the following orbital diagrams represents a paramagnetic atom? 1s 2s 2p A) B) C) D) E) Which of the following orbital diagrams represents a paramagnetic atom? 1s 2s 2p A) B) C) D) E) Which of the following orbital diagrams represents a paramagnetic atom? 1s 2s 2p A) B) C) D) E) Which of the following orbital diagrams represents a paramagnetic atom? 1s 2s 2p A) B) C) D) E)
B) Which of the following orbital diagrams represents a paramagnetic atom? 1s 2s 2p A) B) C) D) E) Which of the following orbital diagrams represents a paramagnetic atom? 1s 2s 2p A) B) C) D) E) Which of the following orbital diagrams represents a paramagnetic atom? 1s 2s 2p A) B) C) D) E) Which of the following orbital diagrams represents a paramagnetic atom? 1s 2s 2p A) B) C) D) E) Which of the following orbital diagrams represents a paramagnetic atom? 1s 2s 2p A) B) C) D) E)
C) Which of the following orbital diagrams represents a paramagnetic atom? 1s 2s 2p A) B) C) D) E) Which of the following orbital diagrams represents a paramagnetic atom? 1s 2s 2p A) B) C) D) E) Which of the following orbital diagrams represents a paramagnetic atom? 1s 2s 2p A) B) C) D) E) Which of the following orbital diagrams represents a paramagnetic atom? 1s 2s 2p A) B) C) D) E) Which of the following orbital diagrams represents a paramagnetic atom? 1s 2s 2p A) B) C) D) E)
D) Which of the following orbital diagrams represents a paramagnetic atom? 1s 2s 2p A) B) C) D) E) Which of the following orbital diagrams represents a paramagnetic atom? 1s 2s 2p A) B) C) D) E) Which of the following orbital diagrams represents a paramagnetic atom? 1s 2s 2p A) B) C) D) E) Which of the following orbital diagrams represents a paramagnetic atom? 1s 2s 2p A) B) C) D) E) Which of the following orbital diagrams represents a paramagnetic atom? 1s 2s 2p A) B) C) D) E)
E) Which of the following orbital diagrams represents a paramagnetic atom? 1s 2s 2p A) B) C) D) E) Which of the following orbital diagrams represents a paramagnetic atom? 1s 2s 2p A) B) C) D) E) Which of the following orbital diagrams represents a paramagnetic atom? 1s 2s 2p A) B) C) D) E) Which of the following orbital diagrams represents a paramagnetic atom? 1s 2s 2p A) B) C) D) E) Which of the following orbital diagrams represents a paramagnetic atom? 1s 2s 2p A) B) C) D) E)

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

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Which of the following orbital occupancy designations is incorrect?


A) 3d4
B) 4d1
C) 2p4
D) 1s1
E) 1s3

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

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All of the following ground-state electron configurations are correct except


A) Fe:[Ar]4s24d6.
B) Ca:[Ar]4s2.
C) In:[Kr]4d105s25p1.
D) Cu:[Ar]3d104s1.
E) Xe:[Kr]4d105s25p6.

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

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Which principle or rule is violated by the following orbital diagram of an atom in its ground state? 1s 2s 2p Which principle or rule is violated by the following orbital diagram of an atom in its ground state? 1s 2s 2p A) Pauli exclusion principle B) Aufbau principle C) No rules or principles are violated by this orbital diagram. D) Heisenberg uncertainty principle E) Hund's rule Which principle or rule is violated by the following orbital diagram of an atom in its ground state? 1s 2s 2p A) Pauli exclusion principle B) Aufbau principle C) No rules or principles are violated by this orbital diagram. D) Heisenberg uncertainty principle E) Hund's rule Which principle or rule is violated by the following orbital diagram of an atom in its ground state? 1s 2s 2p A) Pauli exclusion principle B) Aufbau principle C) No rules or principles are violated by this orbital diagram. D) Heisenberg uncertainty principle E) Hund's rule Which principle or rule is violated by the following orbital diagram of an atom in its ground state? 1s 2s 2p A) Pauli exclusion principle B) Aufbau principle C) No rules or principles are violated by this orbital diagram. D) Heisenberg uncertainty principle E) Hund's rule Which principle or rule is violated by the following orbital diagram of an atom in its ground state? 1s 2s 2p A) Pauli exclusion principle B) Aufbau principle C) No rules or principles are violated by this orbital diagram. D) Heisenberg uncertainty principle E) Hund's rule


A) Pauli exclusion principle
B) Aufbau principle
C) No rules or principles are violated by this orbital diagram.
D) Heisenberg uncertainty principle
E) Hund's rule

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

Correct Answer

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Which of the following orbital diagrams represents a diamagnetic atom? 1s 2s 2p


A) Which of the following orbital diagrams represents a diamagnetic atom? 1s 2s 2p A) B) C) D) E)
B) Which of the following orbital diagrams represents a diamagnetic atom? 1s 2s 2p A) B) C) D) E)
C) Which of the following orbital diagrams represents a diamagnetic atom? 1s 2s 2p A) B) C) D) E)
D) Which of the following orbital diagrams represents a diamagnetic atom? 1s 2s 2p A) B) C) D) E)
E) Which of the following orbital diagrams represents a diamagnetic atom? 1s 2s 2p A) B) C) D) E)

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

Correct Answer

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An atom of which of the following elements has the smallest ionization energy?


A) Cl
B) P
C) Si
D) Na
E) S

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

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An atom of which of the following elements has the largest first ionization energy?


A) Ca
B) K
C) Ge
D) F
E) P

F) All of the above
G) None of the above

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What is the total number of electrons in p orbitals in a ground-state iron atom?


A) 6
B) 18
C) 12
D) 24
E) 30

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

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Two elements that have the same ground-state valence shell configuration of ns2np2 are


A) K and Mg.
B) O and Se.
C) Al and Ga.
D) Ge and Pb.
E) Mg and Ca.

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

Correct Answer

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The change in energy for which of the following processes corresponds to the second ionization energy of magnesium?


A) Mg(g) → Mg2+(g) + 2e-
B) ​Mg(g) → Mg+(g) + e-
C) Mg+(g) → Mg2+(g) + e-
D) Mg-(g) → Mg(g) + e-
E) Mg(g) + e- → Mg-(g)

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

Correct Answer

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The angular momentum quantum number of the two highest-energy valence electrons in an atom of lead is


A) 4.
B) 0.
C) 1.
D) 2.
E) 3.

F) None of the above
G) B) and D)

Correct Answer

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Which of the following sets of four quantum numbers (n,l,ml, ms) correctly describes one of the valence electrons in a ground-state radium atom?


A) 7 1 0 Which of the following sets of four quantum numbers (n,l,ml<sub>,</sub> m<sub>s</sub>) correctly describes one of the valence electrons in a ground-state radium atom? A) 7 1 0 B) 6 1 0 C) 7 2 0 D) 7 2 0 E) 7 0 0 +
B) 6 1 0 Which of the following sets of four quantum numbers (n,l,ml<sub>,</sub> m<sub>s</sub>) correctly describes one of the valence electrons in a ground-state radium atom? A) 7 1 0 B) 6 1 0 C) 7 2 0 D) 7 2 0 E) 7 0 0 +
C) 7 2 0 Which of the following sets of four quantum numbers (n,l,ml<sub>,</sub> m<sub>s</sub>) correctly describes one of the valence electrons in a ground-state radium atom? A) 7 1 0 B) 6 1 0 C) 7 2 0 D) 7 2 0 E) 7 0 0 +
D) 7 2 0 Which of the following sets of four quantum numbers (n,l,ml<sub>,</sub> m<sub>s</sub>) correctly describes one of the valence electrons in a ground-state radium atom? A) 7 1 0 B) 6 1 0 C) 7 2 0 D) 7 2 0 E) 7 0 0 +
E) 7 0 0 + Which of the following sets of four quantum numbers (n,l,ml<sub>,</sub> m<sub>s</sub>) correctly describes one of the valence electrons in a ground-state radium atom? A) 7 1 0 B) 6 1 0 C) 7 2 0 D) 7 2 0 E) 7 0 0 +

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

Correct Answer

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