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In the coordination compound [Cr(NH3) (en) 2Cl]Br2, the coordination number (C.N.) and oxidation number (O.N.) of the metal atom are, respectively,


A) C.N. = 6; O.N. = +4.
B) C.N. = 6; O.N. = +3.
C) C.N. = 5; O.N. = +2.
D) C.N. = 4; O.N. = +2.
E) C.N. = 4; O.N. = +3.

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

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How many 4d electrons does a ground-state Mo atom have?


A) 1
B) 4
C) 3
D) 5
E) 2

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

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The oxidation number of Co in [Co(NH3)4Cl2]Cl is +1.

A) True
B) False

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Which of these electron energy level patterns would absorb light with the shortest wavelength?


A) Which of these electron energy level patterns would absorb light with the shortest wavelength? A)    B)    C)    D)
B) Which of these electron energy level patterns would absorb light with the shortest wavelength? A)    B)    C)    D)
C) Which of these electron energy level patterns would absorb light with the shortest wavelength? A)    B)    C)    D)
D) Which of these electron energy level patterns would absorb light with the shortest wavelength? A)    B)    C)    D)

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

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Which response gives the correct coordination number (C.N.) and oxidation number (O.N.) of the transition metal atom in [Co(NH3) 2(H2O) 2Cl2]+?


A) C.N. = 2; O.N. = +3
B) C.N. = 3; O.N. = +1
C) C.N. = 4; O.N. = +2
D) C.N. = 6; O.N. = +1
E) C.N. = 6; O.N. = +3

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

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How many donor atoms enable EDTA to form a stable complex ion with lead?


A) 6
B) 2
C) 4
D) 3
E) 5

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

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What type of structure is exhibited by most of the transition metals?


A) Close-packed
B) Tetrahedral
C) Trigonal planar
D) Trigonal pyramidal
E) None of the answers is correct.

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

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What is the systematic name for [Ru(NH3) 2(en) ](NO3) 2?


A) (ethylenediamine) diammineruthenium(II) nitrate
B) diamminebis(ethylenediamine) ruthenium(III) nitrate
C) diammine(ethylenediamine) ruthenium(II) nitrate
D) diammine(ethylenediamine) nitratoruthenium(III)
E) bis(ethylene) diamminenitratoruthenate(II)

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

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What is the name that refers to the number of donor atoms surrounding the central metal atom in a complex ion?

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The numbers of geometrical isomers and optical isomers of the complex ion [Co(en) 3]3+ are, respectively,


A) 2 and 2
B) 1 and 1
C) 3 and 2
D) 1 and 2
E) 2 and 4

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

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Which of the following ions is least likely to form colored compounds?


A) Mn2+
B) Cr5+
C) Sc3+
D) Fe3+
E) Co2+

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

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Which name could correspond to the following coordination compound, where M represents a transition metal cation and L represents a ligand? Which name could correspond to the following coordination compound, where M represents a transition metal cation and L represents a ligand?   A)  Hexachloroferrate(III)  B)  Hexaammineiron(III)  C)  Hexaaquochromium(II)  D)  Hexacyanomanganate(II)  E)  All of these are possible.


A) Hexachloroferrate(III)
B) Hexaammineiron(III)
C) Hexaaquochromium(II)
D) Hexacyanomanganate(II)
E) All of these are possible.

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

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A complex ion that undergoes a very slow exchange reaction is called an inert complex.

A) True
B) False

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Coordination compounds may exhibit ________ and ________ types of stereoisomerism.

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geometrica...

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What are the two types of stereoisomers that coordination compounds may exhibit?

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geometrica...

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Which are the most common transition metals?


A) The transition metals in the 3rd period.
B) The transition metals in the 4th period.
C) The elements in Group 6B.
D) The transition metals in the 5th period.
E) The transition metals in the 6th period.

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

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One of the uses of EDTA is in the treatment of ________ ________.

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________ is the name given to compounds that have more than one way to arrange the ligands around the central atom and have distinctly different physical and chemical properties.

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What is the electron configuration of a ground-state Cr atom?


A) 1s22s22p63s23p64s23d4
B) 1s22s22p63s23p63d6
C) 1s22s22p63s23p64s14d5
D) 1s22s22p63s23p64s24d4
E) 1s22s22p63s23p64s13d5

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

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What is the coordination number of chromium in Cr(en)2Cl2?

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