Question 1

The maximum oxidation states for chromium and manganese are

Accepted Answer

A)  both +7. 
B)  +7 and +8, respectively. 
C)  +3 and +4, respectively. 
D)  +5 and +6, respectively. 
E)  +6 and +7, respectively. 
A)  both +7. 
B)  +7 and +8, respectively. 
C)  +3 and +4, respectively. 
D)  +5 and +6, respectively. 
E)  +6 and +7, respectively. E

Question 2

Consider the following data:
$\begin{array} { l l } 
 { \text { Complex } }& { \text { Absorbance maximum } } \
 { \mathrm { Ti } \left( \mathrm { OH } _ { 2 } \right) 6 ^ { 3 + } } &510 \mathrm {~nm}\
\mathrm { Fe } \left( \mathrm { OH } _ { 2 } \right) 6 ^ { 3 + } & 700 \mathrm {~nm} \
\mathrm { Fe } ( \mathrm { CN } ) 6 ^ { 4 - } & 305 \mathrm {~nm}
\end{array}$

Which complex has the largest ligand field splitting?

Accepted Answer

Fe(CN)₆⁴^-

Question 3

What is the formula of the compound formed when potassium dichromate is dissolved in aqueous base?

Accepted Answer

A)  K2CrO4 
B)  K2Cr2O7 
C)  CrO3  
D)  Cr(OH)3 
A)  K2CrO4 
B)  K2Cr2O7 
C)  CrO3  
D)  Cr(OH)3 A

Question 4

The complex CoCl42- absorbs light at approximately ____________ nm and its color is ____________.

Accepted Answer

600-700; v

Question 5

Which of the following complex ions has the smallest d-orbital splitting energy?

Accepted Answer

A)  [CoCl4]2- 
B)  [CoCl6]4- 
C)  [Co(NH3)6]2+  
D)  [Co(OH2)6]2+  
E)  [Co(CN)6]4- 
A)  [CoCl4]2- 
B)  [CoCl6]4- 
C)  [Co(NH3)6]2+  
D)  [Co(OH2)6]2+  
E)  [Co(CN)6]4-

Question 6

Which of the following is likely to be a good reducing agent?

Accepted Answer

A)  Cr2O72- 
B)  MnO4- 
C)  Cr2+  
D)  MnO2  
E)  Cr2O3  
A)  Cr2O72- 
B)  MnO4- 
C)  Cr2+  
D)  MnO2  
E)  Cr2O3

Question 7

What is the oxidation number of cobalt in [CoCl(NH3)5]Cl2?

Accepted Answer

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

Question 8

Which of the following would be the strongest acid in aqueous solution?

Accepted Answer

A)  Mg(OH2)62+(aq) 
B)  V(OH2)62+(aq) 
C)  Ni(OH2)62+(aq) 
D)  Sc(OH2)63+(aq) 
E)  Fe(OH2)62+(aq) 
A)  Mg(OH2)62+(aq) 
B)  V(OH2)62+(aq) 
C)  Ni(OH2)62+(aq) 
D)  Sc(OH2)63+(aq) 
E)  Fe(OH2)62+(aq)

Question 9

How many unpaired electrons are there in [CoBr4]2-?

Accepted Answer

A)  0 
B)  2 
C)  3 
D)  4 
A)  0 
B)  2 
C)  3 
D)  4

Question 10

For a given metal,the oxides become more basic with increasing oxidation state.

Accepted Answer

A) True 
 B)False

Question 11

Complexes with coordination number 4 are either tetrahedral or octahedral.

Accepted Answer

A) True 
 B)False

Question 12

How many geometric isomers are possible for the complex ion[Co(NH3)3(OH2)3]3+?

Accepted Answer

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

Question 13

What is the oxidation number of iron in K3[Fe(CN)6]?

Accepted Answer

A)  +3 
B)  +2 
C)  +9 
D)  +6 
A)  +3 
B)  +2 
C)  +9 
D)  +6

Question 14

rhodium complexes are high spin?

Accepted Answer

A) True 
 B)False

Question 15

Which of the following are ionization isomers?

Accepted Answer

A)  cis-[CoCl2(en)2]Cl and trans-[CoCl2(en)2]Cl 
B)  [Cr(NH3)6][Fe(CN)6] and [Fe(NH3)6][Cr(CN)6] 
C)  [CrCl(OH2)5]Cl2.H2O and [CrCl2(OH2)4]Cl.2H2O 
D)  [CoBr(NH3)5]SO4 and [CoSO4(NH3)5]Br 
E)  [CoNCS(NH3)5]Cl2 and [CoSCN(NH3)5]Cl2  
A)  cis-[CoCl2(en)2]Cl and trans-[CoCl2(en)2]Cl 
B)  [Cr(NH3)6][Fe(CN)6] and [Fe(NH3)6][Cr(CN)6] 
C)  [CrCl(OH2)5]Cl2.H2O and [CrCl2(OH2)4]Cl.2H2O 
D)  [CoBr(NH3)5]SO4 and [CoSO4(NH3)5]Br 
E)  [CoNCS(NH3)5]Cl2 and [CoSCN(NH3)5]Cl2

Question 16

If AgNO3(aq)is added to a 1 M aqueous solution of pentaamminechlorocobalt(III)chloride,how many moles of silver chloride are precipitated?

Accepted Answer

Question 17

Which of the following complexes has the smallest d-orbital splitting energy?

Accepted Answer

A)  Co(NH3)63+  
B)  Co(NH3)5OH2+  
C)  Co(NH3)5CN2+  
D)  Co(NH3)5I2+  
E)  Co(NH3)5(OH2)3+  
A)  Co(NH3)63+  
B)  Co(NH3)5OH2+  
C)  Co(NH3)5CN2+  
D)  Co(NH3)5I2+  
E)  Co(NH3)5(OH2)3+

Question 18

The cationic complex [Co(OH2)6]2+ should have how many unpaired electrons?

Accepted Answer

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

Question 19

Consider the complex trans-[Co(NH3)4Cl2]Cl.Draw the structure of the complex and clearly label or give the following.
a)The inner and outer coordination spheres
b)The coordination number
c)The trans ligands
d)How many stereoisomers are there for a complex with the formula [Co(NH3)4Cl2]Cl?

Accepted Answer

(a)the inner coordination sphe

Question 20

For the complex ion [Co(NCO)2(PH3)4]+, how many different isomers of the complex can exist?

Accepted Answer

A)  8 
B)  6 
C)  4 
D)  3 
E)  2 
A)  8 
B)  6 
C)  4 
D)  3 
E)  2

The maximum oxidation states for chromium and manganese are

Consider the following data: Complex Absorbance maximum 510 700 () 305 Which complex has the largest ligand field splitting?

What is the formula of the compound formed when potassium dichromate is dissolved in aqueous base?

The complex CoCl₄²^- absorbs light at approximately nm and its color is .

Which of the following complex ions has the smallest d-orbital splitting energy?

Which of the following is likely to be a good reducing agent?

What is the oxidation number of cobalt in [CoCl(NH₃)₅]Cl₂?

Which of the following would be the strongest acid in aqueous solution?

How many unpaired electrons are there in [CoBr₄]²^-?

For a given metal,the oxides become more basic with increasing oxidation state.

Complexes with coordination number 4 are either tetrahedral or octahedral.

How many geometric isomers are possible for the complex ion[Co(NH₃)₃(OH₂)₃]³⁺?

What is the oxidation number of iron in K₃[Fe(CN)₆]?

rhodium complexes are high spin?

Which of the following are ionization isomers?

If AgNO₃(aq)is added to a 1 M aqueous solution of pentaamminechlorocobalt(III)chloride,how many moles of silver chloride are precipitated?

Which of the following complexes has the smallest d-orbital splitting energy?

The cationic complex [Co(OH₂)₆]²⁺ should have how many unpaired electrons?

For the complex ion [Co(NCO)₂(PH₃)₄]⁺, how many different isomers of the complex can exist?

Atoms

Molecules

States of Matter

Thermodynamics

Equilibrium

Reactions

Kinetics

The Main-Group Elements

Nuclear Chemistry

Organic Chemistry

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Exam 9: The D-Block Elements

The maximum oxidation states for chromium and manganese are

Consider the following data: Complex Absorbance maximum 510 700 () 305 Which complex has the largest ligand field splitting?

What is the formula of the compound formed when potassium dichromate is dissolved in aqueous base?

The complex CoCl42- absorbs light at approximately ____________ nm and its color is ____________.

Which of the following complex ions has the smallest d-orbital splitting energy?

Which of the following is likely to be a good reducing agent?

What is the oxidation number of cobalt in [CoCl(NH3)5]Cl2?

Which of the following would be the strongest acid in aqueous solution?

How many unpaired electrons are there in [CoBr4]2-?

For a given metal,the oxides become more basic with increasing oxidation state.

Complexes with coordination number 4 are either tetrahedral or octahedral.

How many geometric isomers are possible for the complex ion[Co(NH3)3(OH2)3]3+?

What is the oxidation number of iron in K3[Fe(CN)6]?

rhodium complexes are high spin?

Which of the following are ionization isomers?

If AgNO3(aq)is added to a 1 M aqueous solution of pentaamminechlorocobalt(III)chloride,how many moles of silver chloride are precipitated?

Which of the following complexes has the smallest d-orbital splitting energy?

The cationic complex [Co(OH2)6]2+ should have how many unpaired electrons?

Consider the complex trans-[Co(NH3)4Cl2]Cl.Draw the structure of the complex and clearly label or give the following. a)The inner and outer coordination spheres b)The coordination number c)The trans ligands d)How many stereoisomers are there for a complex with the formula [Co(NH3)4Cl2]Cl?

For the complex ion [Co(NCO)2(PH3)4]+, how many different isomers of the complex can exist?

Atoms

Molecules

States of Matter

Thermodynamics

Equilibrium

Reactions

Kinetics

The Main-Group Elements

Nuclear Chemistry

Organic Chemistry

Filters

The complex CoCl₄²^- absorbs light at approximately nm and its color is .

What is the oxidation number of cobalt in [CoCl(NH₃)₅]Cl₂?

How many unpaired electrons are there in [CoBr₄]²^-?

How many geometric isomers are possible for the complex ion[Co(NH₃)₃(OH₂)₃]³⁺?

What is the oxidation number of iron in K₃[Fe(CN)₆]?

If AgNO₃(aq)is added to a 1 M aqueous solution of pentaamminechlorocobalt(III)chloride,how many moles of silver chloride are precipitated?

The cationic complex [Co(OH₂)₆]²⁺ should have how many unpaired electrons?

For the complex ion [Co(NCO)₂(PH₃)₄]⁺, how many different isomers of the complex can exist?