Q1) Coordination compounds are compounds formed between:

a) Two metals

b) A metal and a non-metal

c) A metal ion and a complex ion

d) A metal and a covalent molecule

Q2) The central metal ion in a coordination compound is usually surrounded by:

a) Ligands

b) Counterions

c) Cations

d) Anions

Q3) Ligands in coordination compounds are:

a) Electrons

b) Complex ions

c) Neutral molecules or ions

d) Protons

Q4) The coordination number of a metal ion in a complex is determined by:

a) The number of ligands bonded to the metal

b) The charge of the metal ion

c) The size of the metal ion

d) The electronic configuration of the metal ion

Q5) The coordination number of most transition metal ions is:

a) 2

b) 4

c) 6

d) 8

Q6) The process of forming a coordination compound is called:

a) Coordination

b) Ligand exchange

c) Chelation

d) Complexation

Q7) Which of the following is not a type of isomerism exhibited by coordination compounds?

a) Structural isomerism

b) Stereoisomerism

c) Optical isomerism

d) Ionic isomerism

Q8) The coordination compound [Co(NH3)6]Cl3 has a coordination number of:

a) 3

b) 4

c) 5

d) 6

Q9) The ligand NO2- is called:

a) Nitrate

b) Nitrite

c) Nitrido

d) Nitro

Q10) The complex ion [Fe(CN)6]3- has a total charge of:

a) +3

b) -3

c) +6

d) -6

Q11) The coordination compound [Co(NH3)4Cl2]Cl has how many ligands coordinated to the central metal ion?

a) 4

b) 5

c) 6

d) 7

Q12) The complex [Cu(NH3)4(H2O)2]2+ exhibits:

a) Ionization isomerism

b) Coordination isomerism

c) Linkage isomerism

d) Geometric isomerism

Q13) Which of the following ligands is a bidentate ligand?

a) NH3

b) H2O

c) NO2-

d) ethylenediamine (en)

Q14) The complex [Co(en)3]3+ contains how many en (ethylenediamine) ligands?

a) 1

b) 2

c) 3

d) 4

Q15) The compound K4[Fe(CN)6] is known as:

a) Potassium cyanide

b) Potassium ferrocyanide

c) Potassium ferricyanide

d) Potassium cyanate

Q16) The ligand EDTA (ethylenediaminetetraacetate) is commonly used in:

a) Water purification

b) Fertilizers

c) Food preservation

d) Medicinal drugs

Q17) The complex [Ni(H2O)6]2+ has a coordination number of:

a) 4

b) 5

c) 6

d) 7

Q18) The compound Na2[PtCl4] is an example of:

a) A coordination compound

b) An ionic compound

c) A covalent compound

d) A molecular compound

Q19) The ligand cyanide (CN-) is a:

a) Strong field ligand

b) Weak field ligand

c) Neutral ligand

d) Anionic ligand

Q20) The compound cisplatin, [Pt(NH3)2Cl2], is used as:

a) An anti-cancer drug

b) An antacid

c) A pesticide

d) A food preservative