Question 1

How many geometric isomers exist for [Fe(en)2(CN)2]+?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  6 
A)  1 
B)  2 
C)  3 
D)  4 
E)  6 C

Question 2

Ions such as [Co(H2O)6]3+ and [Ag(CN)2]- are called ____.

Accepted Answer

A)  ligands 
B)  Lewis bases 
C)  chelates 
D)  alloys 
E)  coordination complexes 
A)  ligands 
B)  Lewis bases 
C)  chelates 
D)  alloys 
E)  coordination complexes E

Question 3

How many geometric isomers may exist for the square-planar complex ion [Pt(OH)2(NH3)2]2-?

Accepted Answer

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

Question 4

What is the formula for potassium diamminetetrachlorovanadate(III)?

Accepted Answer

A)  [KV(NH3)2Cl4] 
B)  K2[V(NH3)2Cl4] 
C)  K[V(NH3)2Cl4] 
D)  [KV(NH3)2]Cl4 
E)  K[V(NH3)2]Cl4 
A)  [KV(NH3)2Cl4] 
B)  K2[V(NH3)2Cl4] 
C)  K[V(NH3)2Cl4] 
D)  [KV(NH3)2]Cl4 
E)  K[V(NH3)2]Cl4

Question 5

Identify the ligands and their charges in [Co(en)2Br2]+.

Accepted Answer

A)  ethylene (charge = −1),bromide (charge = 0) 
B)  ethylene (charge = −1),bromide ion (charge = −1) 
C)  ethylenediamine (charge = 0),bromide ion (charge = −1),cobalt (charge = +3) 
D)  ethylenediamine (charge = 0),bromide (charge = 0) 
E)  ethylenediamine (charge = 0),bromide ion (charge = −1) 
A)  ethylene (charge = −1),bromide (charge = 0) 
B)  ethylene (charge = −1),bromide ion (charge = −1) 
C)  ethylenediamine (charge = 0),bromide ion (charge = −1),cobalt (charge = +3) 
D)  ethylenediamine (charge = 0),bromide (charge = 0) 
E)  ethylenediamine (charge = 0),bromide ion (charge = −1)

Question 6

Which of the following ligands causes the smallest splitting of d orbitals?

Accepted Answer

A)  Cl− 
B)  en 
C)  CN− 
D)  NH3 
E)  NO3− 
A)  Cl− 
B)  en 
C)  CN− 
D)  NH3 
E)  NO3−

Question 7

What is the correct formula for a nickel(II)complex which contains 4 ammonia molecules and 2 water molecules?

Accepted Answer

A)  Ni(NH3)4(H2O)2 
B)  Ni(NH3)4(H2O)22+ 
C)  [Ni(NH3)4](H2O)2 
D)  Ni(NH3)4(H2O)22− 
E)  Ni(NH3)4(H2O)24− 
A)  Ni(NH3)4(H2O)2 
B)  Ni(NH3)4(H2O)22+ 
C)  [Ni(NH3)4](H2O)2 
D)  Ni(NH3)4(H2O)22− 
E)  Ni(NH3)4(H2O)24−

Question 8

Which molecule or ion does NOT act as a ligand?

Accepted Answer

A)  H2O 
B)  NH4+ 
C)  Cl- 
D)  C2O42- 
E)  CN- 
A)  H2O 
B)  NH4+ 
C)  Cl- 
D)  C2O42- 
E)  CN-

Question 9

What are the possible formulas of all the tetracoordinate complex ions formed by copper(II)with NH3 and/or ethylenediamine (en)molecules as ligands?

Accepted Answer

A)  Cu(NH3)42+,Cu(en)(NH3)32+,Cu(en)2(NH3)22+,Cu(en)3(NH3)2+,Cu(en)42+ 
B)  Cu(NH3)42+,Cu(en)2(NH3)42+,Cu(en)22+ 
C)  Cu(NH3)42+,Cu(en)(NH3)22+,Cu(en)22+ 
D)  Cu(NH3)62+,Cu(en)2(NH3)22+,Cu(en)32+ 
E)  Cu(NH3)42+,Cu(en)22+ 
A)  Cu(NH3)42+,Cu(en)(NH3)32+,Cu(en)2(NH3)22+,Cu(en)3(NH3)2+,Cu(en)42+ 
B)  Cu(NH3)42+,Cu(en)2(NH3)42+,Cu(en)22+ 
C)  Cu(NH3)42+,Cu(en)(NH3)22+,Cu(en)22+ 
D)  Cu(NH3)62+,Cu(en)2(NH3)22+,Cu(en)32+ 
E)  Cu(NH3)42+,Cu(en)22+

Question 10

How many possible structures exist for the tetrahedral complex [Zn(en)3]2+?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  6 
A)  1 
B)  2 
C)  3 
D)  4 
E)  6

Question 11

A Lewis base is defined as a species that

Accepted Answer

A)  increases the OH− concentration in water. 
B)  accepts a proton. 
C)  donates a pair of electrons to a bond. 
D)  has a negative charge. 
E)  is two electrons short of an octet in the valence shell. 
A)  increases the OH− concentration in water. 
B)  accepts a proton. 
C)  donates a pair of electrons to a bond. 
D)  has a negative charge. 
E)  is two electrons short of an octet in the valence shell.

Question 12

Identify the ligands and their charges in [Os(NH3)4Cl2]+.

Accepted Answer

A)  ammonia (no charge),chloride ion (charge = −1) 
B)  chloride ion (charge = −1) 
C)  ammonia (no charge) 
D)  osmium (charge = +3) 
E)  osmium (charge = +3),chloride ion (charge = −1) 
A)  ammonia (no charge),chloride ion (charge = −1) 
B)  chloride ion (charge = −1) 
C)  ammonia (no charge) 
D)  osmium (charge = +3) 
E)  osmium (charge = +3),chloride ion (charge = −1)

Question 13

What is the electron configuration for Fe3+?

Accepted Answer

A)  1s22s22p63s23p63d54s1 
B)  1s22s22p63s23p63d44s2 
C)  1s22s22p63s23p63d6 
D)  1s22s22p63s23p63d5 
E)  1s22s22p63s23p63d7 
A)  1s22s22p63s23p63d54s1 
B)  1s22s22p63s23p63d44s2 
C)  1s22s22p63s23p63d6 
D)  1s22s22p63s23p63d5 
E)  1s22s22p63s23p63d7

Question 14

Why might a cyano complex of a metal appear yellow and the chloride complex of the same metal appear green?

Accepted Answer

A)  The cyanide ions transmits yellow light more efficiently than the chloride ions. 
B)  The cyanide ions splits the d orbital energies more than the chloride ions,resulting in the cyanide complex absorbing yellow light. 
C)  The cyanide ions splits the d orbital energies more than chloride ions,resulting in the absorption band for the cyanide complex being shifted to shorter wavelengths. 
D)  The chloride ions splits the d orbital energies more than cyanide ions,resulting in the absorption band for the chloride complex being shifted to shorter wavelengths. 
E)  The chloride ions splits the d orbital energies more than the cyanide ions,resulting in the chloride complex absorbing yellow light. 
A)  The cyanide ions transmits yellow light more efficiently than the chloride ions. 
B)  The cyanide ions splits the d orbital energies more than the chloride ions,resulting in the cyanide complex absorbing yellow light. 
C)  The cyanide ions splits the d orbital energies more than chloride ions,resulting in the absorption band for the cyanide complex being shifted to shorter wavelengths. 
D)  The chloride ions splits the d orbital energies more than cyanide ions,resulting in the absorption band for the chloride complex being shifted to shorter wavelengths. 
E)  The chloride ions splits the d orbital energies more than the cyanide ions,resulting in the chloride complex absorbing yellow light.

Question 15

What is the oxidation number of molybdenum in [Mo(H2O)5OH]Cl2?

Accepted Answer

A)  +1 
B)  +2 
C)  +3 
D)  +4 
E)  +6 
A)  +1 
B)  +2 
C)  +3 
D)  +4 
E)  +6

Question 16

What is the oxidation number of the copper in [Cu(NH3)3Cl]NO3?

Accepted Answer

A)  0 
B)  +1 
C)  +2 
D)  +4 
E)  +5 
A)  0 
B)  +1 
C)  +2 
D)  +4 
E)  +5

Question 17

Ti(NH3)63+ has a d-orbital electron transition at 399 nm.Find Δo at this wavelength.

Accepted Answer

A)  300 kJ/mol 
B)  235 kJ/mol 
C)  499 kJ/mol 
D)  399 kJ/mol 
E)  150 kJ/mol 
A)  300 kJ/mol 
B)  235 kJ/mol 
C)  499 kJ/mol 
D)  399 kJ/mol 
E)  150 kJ/mol

Question 18

What is the oxidation number of the chromium in [Cr(H2O)2Cl4]−?

Accepted Answer

A)  0 
B)  +1 
C)  +2 
D)  +3 
E)  +5 
A)  0 
B)  +1 
C)  +2 
D)  +3 
E)  +5

Question 19

The spectrochemical series

Accepted Answer

A)  lists metals ions in order of their oxidation state. 
B)  lists metals ions in order by their color. 
C)  lists ligands in order of their tendency to split d orbitals. 
D)  is used to determine the oxidation state of a central metal atom. 
E)  is used to calculate the crystal field splitting energy of complex ions. 
A)  lists metals ions in order of their oxidation state. 
B)  lists metals ions in order by their color. 
C)  lists ligands in order of their tendency to split d orbitals. 
D)  is used to determine the oxidation state of a central metal atom. 
E)  is used to calculate the crystal field splitting energy of complex ions.

Question 20

What is the electron configuration for Ti4+?

Accepted Answer

A)  1s22s22p63s23p64s2 
B)  1s22s22p63s23p63d2 
C)  1s22s22p63s23p63d24s2 
D)  1s22s22p63s23p63d10 
E)  1s22s22p63s23p6 
A)  1s22s22p63s23p64s2 
B)  1s22s22p63s23p63d2 
C)  1s22s22p63s23p63d24s2 
D)  1s22s22p63s23p63d10 
E)  1s22s22p63s23p6

Exam 19: Complex Ions

How many geometric isomers exist for [Fe(en)2(CN)2]+?

Ions such as [Co(H2O)6]3+ and [Ag(CN)2]- are called ____.

How many geometric isomers may exist for the square-planar complex ion [Pt(OH)2(NH3)2]2-?

What is the formula for potassium diamminetetrachlorovanadate(III)?

Identify the ligands and their charges in [Co(en)2Br2]+.

Which of the following ligands causes the smallest splitting of d orbitals?

What is the correct formula for a nickel(II)complex which contains 4 ammonia molecules and 2 water molecules?

Which molecule or ion does NOT act as a ligand?

What are the possible formulas of all the tetracoordinate complex ions formed by copper(II)with NH3 and/or ethylenediamine (en)molecules as ligands?

How many possible structures exist for the tetrahedral complex [Zn(en)3]2+?

A Lewis base is defined as a species that

Identify the ligands and their charges in [Os(NH3)4Cl2]+.

What is the electron configuration for Fe3+?

Why might a cyano complex of a metal appear yellow and the chloride complex of the same metal appear green?

What is the oxidation number of molybdenum in [Mo(H2O)5OH]Cl2?

What is the oxidation number of the copper in [Cu(NH3)3Cl]NO3?

Ti(NH3)63+ has a d-orbital electron transition at 399 nm.Find Δo at this wavelength.

What is the oxidation number of the chromium in [Cr(H2O)2Cl4]−?

The spectrochemical series

What is the electron configuration for Ti4+?

Matter and Measurements

Atoms, molecules, and Ions

Mass Relations in Chemistry;stoichiometry

Reactions in Aqueous Solution

Gases

Electronic Structure and the Periodic Table

Covalent Bonding

Thermochemistry

Liquids and Solids

Solutions

Rate of Reaction

Gaseous Chemical Equilibrium

Acids and Bases

Equilibria in Acid-Base Solutions

Complex Ion and Precipitation Equilibria

Spontaneity of Reaction

Electrochemistry

Nuclear Reactions

Chemistry of the Metals

Chemistry of the Nonmetals

Organic Chemistry

Organic Polymers, natural and Synthetic

Filters

How many geometric isomers exist for [Fe(en)₂(CN)₂]⁺?

Ions such as [Co(H₂O)₆]³⁺ and [Ag(CN)₂]^- are called ____.

How many geometric isomers may exist for the square-planar complex ion [Pt(OH)₂(NH₃)₂]^2-?

Identify the ligands and their charges in [Co(en)₂Br₂]⁺.

What are the possible formulas of all the tetracoordinate complex ions formed by copper(II)with NH₃ and/or ethylenediamine (en)molecules as ligands?

How many possible structures exist for the tetrahedral complex [Zn(en)₃]²⁺?

Identify the ligands and their charges in [Os(NH₃)₄Cl₂]⁺.

What is the electron configuration for Fe³⁺?

What is the oxidation number of molybdenum in [Mo(H₂O)₅OH]Cl₂?

What is the oxidation number of the copper in [Cu(NH₃)₃Cl]NO₃?

Ti(NH₃)₆³⁺ has a d-orbital electron transition at 399 nm.Find Δ_o at this wavelength.

What is the oxidation number of the chromium in [Cr(H₂O)₂Cl₄]−?

What is the electron configuration for Ti⁴⁺?