Ligands And Complexes

Question 0

What is a ligand

Answer 0

Negative ions or uncharged molecules with 1/more lone pairs of electrons
Electron donors donating unbounded electrons to unfilled orbitals (dative covalent bonds)

Question 1

What is a complex

Answer 1

A central metal ion surrounded by ligands

Question 2

Give an example of a neutral ligand

Answer 2

Ammonia and water

Question 3

Common negative ligands

Answer 3

Chloride and cyanide

Question 4

Ligands which donate one pair of electrons are

Donate 6 pairs are

Answer 4

Monodentate

Hexadentate

Question 5

What is EDTA

Answer 5

Hexadentate ligand
Six pairs of non bonding electrons
Reacts with metal ions such as nickel 1:1

Question 6

Naming complexes

Answer 6

Alphabetical order by name of metal 
Ligand (-ve) ends -IDE changes to an -o 
Ammonia known as ammine 
Water known as aqua
Complex negative overall ends on -ate 
Copper is curate 
Iron is ferrate

Question 7

Degenerate orbitals have the same

Answer 7

Energy

Question 8

Ligands that cause a large energy difference in D orbitals

Answer 8

Strong field ligands

Question 9

Ligands where the energydifference is small

Answer 9

Weak field

Question 10

What ligand causes the greatest energy difference

Answer 10

Cyanide ion

Question 11

Cyanide is the strongest what is the weakest ligand causing the least energy difference

Answer 11

Iodide

Question 12

Loss of the degeneracy is also known as

Answer 12

Splitting of d orbitals

Question 13

Energy difference depends on position of the ligand in the

Answer 13

Spectrochemical series