Chapter 4: 4.1 Electronic Configurations, Properties, and Complexes

Question 1

What are the d-block elements usually known as?

Answer 1

Transition metals

Question 2

Define:
Complex

Answer 2

Any compound that contains several atoms, including at least one transition metal atom or ion

Question 3

Define:
Ligand

Answer 3

Any molecule or ion that is bonded to the metal centre

Question 4

Ligands can be _______ _________ or they can be ______

Answer 4

Neutral molecules
Anions

Question 5

True or False:
Neutral ligands keep the same name when present in a complex

Answer 5

True

Question 6

What’s different about the names of anionic ligands?

Answer 6

Always end in the letter “o”

Question 7

Most _____-__-______ bonds are considered polar covalent bonds

Answer 7

Metal-to-ligand

Question 8

What are metal-to-ligand bonds sometimes treated as?

Answer 8

Ionic

Question 9

Define:
Donor atom

Answer 9

Atom of a ligand that is directly bonded to the metal center

Question 10

Describe a monodentate ligand

Answer 10

One tooth, ligand that contains only one donor atom

Question 11

Describe a bidentate ligand

Answer 11

Two teeth, contains two donor atoms

Question 12

Define:
Chelating ligand

Answer 12

When two or more donor atoms of the same ligand are bound to the same metal center

Question 13

Is the bonding of a chelate ligand strong?

Answer 13

Yes, as it is a “claw”

Question 14

What are chelates?

Answer 14

Coordination compounds that contain chelating ligands

Question 15

Define:
Linkage isomers

Answer 15

Two complexes differ only by the donor atom of a ligand

Question 16

When writing the formula of a complex, the convention is to:

Answer 16

Include the metal and all of its ligands in square brackets

Question 17

The combination of complex cations and complex anions to make salts, gives rise to:

Answer 17

Coordination isomers

Question 18

Coordination isomers are only possible for:

Answer 18

Salts in which both the cation and anion are complex ions

Question 19

Define:
Ionization isomers

Answer 19

Another structural isomer, result from an interchange of an anionic ligand within the coordination sphere with an anion outside of the coordination sphere

Question 20

Define:
Coordination number

Answer 20

The number of atoms directly bound to the metal center

Question 21

Define:
Stereochemistry

Answer 21

Describes how the coordinated atoms are arranged in space

Question 22

Are coordination numbers 2 and 3 common?

Answer 22

Not really, except for the ions Cu(I), Ag(I), and Au(I)

Question 23

What is the typical stereochemistry of coordination numbers 2 and 3?

Answer 23

2: Linear
3: Trigonal Planar

Question 24

Is coordination number 4 common?

Answer 24

Yes

Question 25

What are stereochemistry are the coordination number 4?

Answer 25

Tetrahedral
Square planar

Question 26

Define:
Stereoisomers

Answer 26

Different, non-interconverting spatial arrangements

Question 27

Is coordination number 5 common?

Answer 27

No, it is uncommon

Question 28

What is stereochemistry of coordination number 5?

Answer 28

Trigonal bipyramidal
Square pyramidal

Question 29

What is the most common coordination number for transition metals?

Answer 29

6

Question 30

What is stereochemistry for coordination number 6?

Answer 30

Almost always octahedral or distorted octahedral

Question 31

What are the possible stereoisomers of a coordination number 6? Describe them

Answer 31

cis- (same side of plane)
trans- (different side of plane)
fac- (forms a face)
mer- (forms a meridian)

Question 32

Porphine-metal complexes are known as:

Answer 32

Porphyrin

Question 33

Hemoglobin is a __________ protein

Answer 33

Tetrameric (with four subunits)

Question 34

Describe Henry’s Law

Answer 34

The direct relationship between the amount of gas that is dissolved and the partial pressure of the gas