Inorganic Chemistry Learning Quizzes for Sixth Form

Question 1

What is the geometry of a coordination complex with a central metal ion that has six monodentate ligands?

Accepted Answer

Octahedral

Answer

Tetrahedral

Answer

Square planar

Answer

Trigonal bipyramidal

Question 2

Predict the products of the following reaction and explain the chemical driving forces behind the reaction. Discuss any potential reaction mechanisms involved.

Reaction: Fe2O3(s) + 2Al(s) ---->

Accepted Answer

FeAl2O4, because the reaction is a redox reaction and the products are formed by the exchange of electrons.

Answer

Fe + Al2O3, because Fe has more oxidizing power than Al.

Answer

Fe2O3 + Al, because the reaction is exothermic and the products are more stable than the reactants.

Answer

FeAl, because the reaction involves the formation of a metal-metal bond.

Question 3

How does transition metal pollution harm the environment, and what chemical processes can help mitigate its effects?

Accepted Answer

Transition metal pollution can damage ecosystems, reducing biodiversity and disrupting ecological processes.

Accepted Answer

Chelating agents can bind to transition metals in polluted areas, making them less toxic and easier to remove.

Answer

Transition metals are harmless to the environment because they are essential plant nutrients.

Answer

Transition metals occur naturally in the environment, so pollution from these metals is not a significant concern.

Question 4

Which factor does not directly affect the stability of coordination complexes?

Accepted Answer

Temperature

Answer

Nature of the metal ion

Answer

Type of ligands

Answer

Presence of chelating agents

Question 5

Which property is NOT characteristic of transition metals?

Accepted Answer

Good electrical insulators

Answer

Variable oxidation states

Answer

Formation of coloured ions

Answer

High melting and boiling points

Question 6

What distinguishes transition metals from other elements?

Accepted Answer

They have partially filled d-orbitals.

Answer

They always have a fixed oxidation state.

Answer

They typically form colorless compounds.

Answer

They are poor conductors of electricity and heat.

Question 7

Which of the following is NOT a type of inorganic compound?

Accepted Answer

Organic compound

Answer

Salt

Answer

Metal

Answer

Acid

Question 8

Which of the following is NOT a type of intermolecular force?

Accepted Answer

Covalent bonding

Answer

London dispersion forces

Answer

Dipole-dipole interactions

Answer

Hydrogen bonding

Question 9

Which of the following are characteristics of transition metals?

Accepted Answer

Variable oxidation states

Accepted Answer

Colored compounds

Answer

Inert

Question 10

Which of the following interactions is NOT an intermolecular force?

Accepted Answer

Ionic bonding

Answer

London dispersion forces

Answer

Dipole-dipole interactions

Answer

Hydrogen bonding

Question 11

Which of the following is NOT an intermolecular force?

Accepted Answer

Metallic bonding

Answer

Van der Waals dispersion forces

Answer

Hydrogen bonding

Answer

Dipole-dipole interactions

Question 12

Which property is not typical of transition metals?

Accepted Answer

Diamagnetic

Answer

High melting points

Answer

Variable oxidation states

Answer

Form stable oxides

Question 13

Identify the geometry and coordination number of the coordination complex [Co(NH3)6]Cl3.

Accepted Answer

Octahedral, 6

Answer

Tetrahedral, 4

Answer

Square planar, 4

Answer

Trigonal planar, 3

Question 14

In an acidic solution, which reagent can oxidize Fe2+ ions to Fe3+ ions?

Accepted Answer

KMnO4

Answer

KBr

Answer

H2SO4

Answer

NaOH

Question 15

Within a group in the periodic table, how does the atomic radius generally change as you move down the group?

Accepted Answer

Increases

Answer

Decreases

Answer

Remains constant

Answer

First increases and then decreases

Question 16

Which of the following is a defining characteristic of transition metals?

Accepted Answer

Variable oxidation states

Answer

Diamagnetic complexes

Answer

Low melting points

Answer

High reactivity

Question 17

What is the hybridization of the central metal ion in the complex ion [Fe(CN)6]4-?

Accepted Answer

sp3d2

Answer

d2sp3

Answer

dsp3

Answer

sp3

Question 18

Which of the following reactions involves a redox process?

Accepted Answer

2FeCl3 + SnCl2 → 2FeCl2 + SnCl4

Answer

2NaCl + H2SO4 → Na2SO4 + 2HCl

Answer

2NaOH + H2SO4 → Na2SO4 + 2H2O

Answer

2AgNO3 + 2KI → 2AgI + 2KNO3

Question 19

Which of the following is a characteristic physical property of transition metals?

Accepted Answer

High electrical conductivity

Answer

Low melting points

Answer

Brittle nature

Answer

Non-magnetic properties

Question 20

Which of the following ligands is considered a strong field ligand, resulting in the formation of low-spin complexes?

Accepted Answer

CN-

Answer

Cl-

Answer

NH3

Answer

H2O

Question 21

Which of the following reactions represents the disproportionation of hypochlorite ions?

Accepted Answer

2HOCl → H2O + Cl2

Answer

HOCl + HOCl → 2HClO

Answer

HOCl → HCl + O2

Answer

HOCl + HCl → H2O + ClO2

Question 22

What is the coordination geometry of the complex ion [Fe(CN)6]4-?

Accepted Answer

Octahedral

Answer

Tetrahedral

Answer

Square planar

Answer

Trigonal bipyramidal

Question 23

Which of the following is a characteristic of transition metal catalysts?

Accepted Answer

High selectivity and efficiency

Answer

Short lifetime

Answer

Low activity

Answer

Irreversibility

Question 24

What is the correct IUPAC name for the compound Fe2O3?

Accepted Answer

Iron(III) oxide

Answer

Iron(II) oxide

Answer

Iron oxide(II,III)

Answer

Iron(II,III) oxide

Question 25

Which of the following processes involves the reduction of a metal ion?

Accepted Answer

Electrolysis

Answer

Sublimation

Answer

Precipitation

Answer

Distillation

Question 26

In the complex ion [Co(NH3)6]3+, what is the coordination number of the metal ion?

Accepted Answer

6

Answer

4

Answer

5

Answer

7

Question 27

Which of the following reactions is classified as a redox reaction?

Accepted Answer

Oxidation-reduction

Answer

Neutralization

Answer

Precipitation

Answer

Displacement

Question 28

Identify the type of isomerism exhibited by the complex [Co(NH3)4Cl2]Br.

Accepted Answer

Linkage isomerism

Answer

Stereoisomerism

Answer

Structural isomerism

Answer

Ionization isomerism

Question 29

Provide the correct IUPAC name for the compound FeOOH.

Accepted Answer

Iron(III) oxide hydroxide

Answer

Iron(II) hydroxide oxide

Answer

Iron(III) hydroxide oxide

Answer

Iron(II) oxide hydroxide

Question 30

Which of the following is the correct electronic configuration of Fe2+?

Accepted Answer

[Ar] 3d6

Answer

[Ar] 3d8

Answer

[Ar] 4s2 3d6

Answer

[Ar] 4s2 3d5

Question 31

Ligands that donate a lone pair of electrons to a metal ion are known as:

Accepted Answer

Lewis bases

Answer

Lewis acids

Answer

Bronsted acids

Answer

Bronsted bases

Question 32

The formation of a precipitate in a reaction between two aqueous solutions is an indication of:

Accepted Answer

A precipitation reaction

Answer

A redox reaction

Answer

A neutralization reaction

Answer

A displacement reaction

Question 33

The IUPAC name for the complex ion [Cu(NH3)4]2+ is:

Accepted Answer

Tetraamminecopper(II) ion

Answer

Tetraammoniumcopper(II) ion

Answer

Ammoniumcopper(IV) ion

Answer

Copper(II) tetraammine ion

Question 34

Which of the following is an example of a heteroleptic complex?

Accepted Answer

[Cr(en)3]2+

Answer

[Fe(H2O)6]2+

Answer

[Co(NH3)6]3+

Answer

[Ni(CN)4]2-

Question 35

The coordination sphere of a metal ion refers to:

Accepted Answer

The number and arrangement of ligands attached to the metal ion

Answer

The shape of the complex ion

Answer

The charge of the complex ion

Answer

The color of the complex ion

Question 36

Which of the following reactions is an example of a redox reaction involving a transition metal?

Accepted Answer

2FeCl3 + SnCl2 -> 2FeCl2 + SnCl4

Answer

NaOH + HCl -> NaCl + H2O

Answer

CH4 + 2O2 -> CO2 + 2H2O

Answer

2NH3 + H2SO4 -> (NH4)2SO4

Question 37

The catalytic converter in a car uses a transition metal to convert:

Accepted Answer

Carbon monoxide and nitrogen oxides into carbon dioxide and water

Answer

Carbon dioxide and water into carbon monoxide and nitrogen oxides

Answer

Nitrogen oxides and carbon dioxide into carbon monoxide and water

Answer

Carbon monoxide and water into carbon dioxide and nitrogen oxides

Question 38

Which of the following factors does NOT affect the stability of transition metal complexes?

Accepted Answer

Pressure

Answer

Ligand field strength

Answer

Oxidation state of the metal ion

Answer

pH

Question 39

The term 'labile' refers to transition metal complexes that:

Accepted Answer

React quickly with ligands

Answer

React slowly with ligands

Answer

Are very stable

Answer

Have a high activation energy for ligand exchange

Question 40

Which of the following is a characteristic of organometallic compounds?

Accepted Answer

Contain a metal-carbon bond

Answer

Are highly reactive

Answer

Are usually ionic

Answer

Have low melting points

Question 41

Which property is NOT characteristic of transition metals?

Accepted Answer

Reacting with halogens to form ionic compounds

Answer

Variable oxidation states

Answer

Forming highly colored compounds

Answer

Acting as efficient catalysts

Question 42

The coordination complex [Co(NH3)6]Cl3 exhibits:

Accepted Answer

Octahedral geometry and high-spin configuration

Answer

Tetrahedral geometry and low-spin configuration

Answer

Square planar geometry and high-spin configuration

Answer

Trigonal bipyramidal geometry and low-spin configuration

Question 43

Which of the following ligands is classified as a strong-field ligand?

Accepted Answer

CN-

Answer

H2O

Answer

Cl-

Answer

NH3

Question 44

Which of the following metals is known for its high reactivity and tendency to form covalent compounds?

Accepted Answer

Aluminium

Answer

Copper

Answer

Zinc

Answer

Iron

Question 45

The coordination complex [Fe(CN)6]4- is characterized by:

Accepted Answer

Octahedral geometry and low-spin configuration

Answer

Tetrahedral geometry and high-spin configuration

Answer

Square planar geometry and low-spin configuration

Answer

Trigonal bipyramidal geometry and high-spin configuration

Question 46

The IUPAC name for the compound Fe2O3 is:

Accepted Answer

Iron(III) oxide

Answer

Iron(II) oxide

Answer

Iron(II,III) oxide

Answer

Ferric oxide

Question 47

Which of the following can act as both a monodentate and a bidentate ligand?

Accepted Answer

en

Answer

NH3

Answer

CN-

Answer

Cl-

Question 48

Provide the IUPAC name of the compound Fe2O3.

Accepted Answer

Iron(III) oxide

Answer

Iron(II) oxide

Answer

Iron(IV) oxide

Answer

Iron(V) oxide

Question 49

Identify the reaction that is an example of a redox reaction.

Accepted Answer

Fe + 2HCl -> FeCl2 + H2

Answer

2Na + Cl2 -> 2NaCl

Answer

CaCO3 -> CaO + CO2

Answer

NH3 + HCl -> NH4Cl

Question 50

What is the hybridization of the central metal ion in the complex [Co(NH3)6]3+?

Accepted Answer

sp3

Answer

sp3d2

Answer

d2sp3

Answer

dsp3

Question 51

Which intermolecular force is dominant in a liquid composed of molecules with permanent dipoles?

Accepted Answer

Dipole-dipole interactions

Answer

Ionic interactions

Answer

Hydrogen bonding

Answer

Dispersion forces

Question 52

Within the complex ion [Fe(CN)6]4-, how would you describe the nature of the bonding?

Accepted Answer

Coordinate

Answer

Ionic

Answer

Covalent

Answer

Metallic

Question 53

Which of the following metals is the strongest reducing agent?

Accepted Answer

Sodium

Answer

Iron

Answer

Copper

Answer

Gold

Question 54

What is the pH of a 0.1 M solution of HCl?

Accepted Answer

0

Answer

1

Answer

7

Answer

14

Question 55

What is the formula of the precipitate formed when solutions of barium chloride and sodium sulfate are mixed?

Accepted Answer

BaSO4

Answer

BaCl2

Answer

Na2SO4

Answer

NaCl

Question 56

What is the IUPAC name of the compound Fe2O3?

Accepted Answer

Iron(III) oxide

Answer

Iron(II) oxide

Answer

Iron oxide

Answer

Ferrous oxide

Question 57

Which characteristic is NOT typically associated with transition metals?

Accepted Answer

Resistance to corrosion

Answer

Variable oxidation states

Answer

Formation of colored ions

Answer

High electrical conductivity

Question 58

Which of the following reactions correctly depicts the redox behavior of MnO4-?

Accepted Answer

MnO4- + 8H+ + 5e- → Mn2+ + 4H2O

Answer

MnO4- + 2H+ + 2e- → MnO2 + H2O

Answer

MnO4- + 4H+ + 3e- → MnO(OH)2 + 2H2O

Answer

MnO4- + e- → MnO42-

Question 59

In [Fe(CN)6]4-, what type of hybridization is exhibited by the central metal ion, iron?

Accepted Answer

sp3d2

Answer

sp

Answer

sp2

Answer

d2sp3

Question 60

Which of the following ligands is considered a strong-field ligand, resulting in a larger crystal field splitting energy?

Accepted Answer

CN-

Answer

H2O

Answer

NH3

Answer

Cl-

Question 61

According to IUPAC nomenclature, what is the correct name for Fe2O3?

Accepted Answer

Iron(III) oxide

Answer

Iron oxide

Answer

Diiron trioxide

Answer

Triiron dioxide

Question 62

In the coordination complex [Co(NH3)5Cl]2+, what is the coordination number of the cobalt ion?

Accepted Answer

5

Answer

4

Answer

6

Answer

7

Question 63

Which of the following elements is classified as a metalloid due to its properties?

Accepted Answer

Phosphorus

Answer

Sodium

Answer

Chlorine

Answer

Potassium

Question 64

Based on VSEPR theory, what is the molecular shape of SF6?

Accepted Answer

Octahedral

Answer

Linear

Answer

Trigonal planar

Answer

Tetrahedral