Unit One, Chapter Seven - Ligands And Transition Metal Complexes

Question 1

What is a Lewis acid?

Answer 1

Metals.
This is because they accept electrons from ligands

Question 2

What is a Lewis base?

Answer 2

Ligands.
This is because they donate electrons to the central metal atom

Question 3

What is the difference between a monodentate and a hexadentate ligand?

Answer 3

Monodentate ligands form ONE co-ordinate bond to a metal atom or ion, whereas hexadentate ligands form SIX

Question 4

What is a co-ordination number?

Answer 4

The number of dative covalent bonds from the ligand to the central metal ion or atom

Question 5

How do ligands bond to metals?

Answer 5

By forming a co-ordinate bond (dative covalent bond) to the metal using their lone pair of electrons

Question 6

Ligands can be classified as…

Answer 6

Monodentate, bidentate, etc up to hexadentate

Question 7

What are ligands?

Answer 7

Electron donors, they may be negative ions or molecules with non-bonding pair of electrons

Question 8

What is a complex?

Answer 8

A central metal ion or atom surrounded by ligands