Inorganic Chemistry - Transition Metals Practice Questions
A-Levels · A-Level Chemistry · 145 free MCQs with instant results and detailed explanations.
145
Total
47
Easy
71
Medium
27
Hard
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Sample Questions from Inorganic Chemistry - Transition Metals
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Q1
Easy
Which of the following statements about transition metals is TRUE?
A.
They have incomplete d orbitals.
B.
They do not form colored compounds.
C.
They have only one oxidation state.
D.
They are typically found in Group 1 of the periodic table.
Show Answer & Explanation
Correct Answer: A
Transition metals are characterized by having incomplete d orbitals, which allows them to form various oxidation states and colored compounds due to d-d electron transitions.
Q2
Easy
Which ion has the highest oxidation state?
A.
Fe^2+
B.
Cu^2+
C.
MnO4^-
D.
Co^3+
Show Answer & Explanation
Correct Answer: C
In the permanganate ion (MnO4^-), manganese is in the +7 oxidation state, which is higher than the oxidation states of Fe, Cu, and Co in the provided options.
Q3
Easy
Which of the following complexes is likely to exhibit geometric isomerism?
A.
[Cu(NH3)4]Cl2
B.
[Co(NH3)6]Cl3
C.
[NiCl4]2-
D.
[PtCl2(NH3)2]
Show Answer & Explanation
Correct Answer: D
The complex [PtCl2(NH3)2] can exhibit geometric isomerism due to the presence of two different ligands and a square planar coordination geometry, allowing for cis and trans forms.
Q4
Medium
Which of the following compounds is a strong field ligand?
A.
Iodide (I-)
B.
Cyanide (CN-)
C.
Chloride (Cl-)
D.
Bromide (Br-)
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Correct Answer: B
Cyanide (CN-) is a strong field ligand that causes a large splitting in the d-orbitals, leading to low-spin complexes, whereas the other ligands are weaker field ligands.
Q5
Medium
What is the color of the complex formed when copper(II) ions react with ammonia in excess?
A.
Pale blue
B.
Dark blue
C.
Green
D.
Yellow
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Correct Answer: B
When copper(II) ions react with ammonia in excess, they form a dark blue complex, [Cu(NH3)4(H2O)2]²⁺, indicating the characteristic color change.
Q6
Medium
Which property of transition metals is primarily due to the presence of unpaired d-electrons?
A.
High melting points
B.
Catalytic activity
C.
Color in compounds
D.
Electrical conductivity
Show Answer & Explanation
Correct Answer: C
The presence of unpaired d-electrons in transition metals allows for the absorption of specific wavelengths of light, giving rise to their characteristic colors in compounds.
Q7
Medium
Which of the following statements about the catalytic properties of transition metals is true?
A.
They can only catalyze oxidation reactions.
B.
They are ineffective in reactions involving gases.
C.
They can change oxidation states during reactions.
D.
They only function at high temperatures.
Show Answer & Explanation
Correct Answer: C
Transition metals can change oxidation states during reactions, allowing them to facilitate a variety of processes, including both oxidation and reduction reactions.
Q8
Hard
Which of the following transition metal complexes exhibits geometrical isomerism?
A.
[Cu(NH3)4]SO4
B.
[CoCl2(NH3)4]
C.
[NiCl2(H2O)4]
D.
[Fe(CN)6]3-
Show Answer & Explanation
Correct Answer: B
The complex [CoCl2(NH3)4] can exhibit geometrical isomerism due to the presence of two different ligands, allowing for cis and trans configurations. The others do not have such arrangements due to their ligand types or number.
Q9
Hard
What is the effect of increasing the oxidation state of a transition metal on its ligand field strength?
A.
It decreases the ligand field strength.
B.
It has no effect on ligand field strength.
C.
It increases the ligand field strength.
D.
It only affects weak field ligands.
Show Answer & Explanation
Correct Answer: C
Increasing the oxidation state of a transition metal generally increases its positive charge, which enhances the attraction between the metal and the ligands. This leads to an increase in ligand field strength, affecting the splitting of d-orbitals.
Q10
Hard
Which of the following transition metal complexes is expected to exhibit the highest spin pairing energy, considering the ligand field strength?
A.
[Co(NH3)6]3+
B.
[Fe(CN)6]3-
C.
[Ni(H2O)6]2+
D.
[CrCl6]3-
Show Answer & Explanation
Correct Answer: B
The [Fe(CN)6]3- complex has strong field ligands (CN-) which cause a large splitting of the d-orbitals and lead to high spin pairing energy compared to the other complexes listed, which have weaker field ligands.
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Inorganic Chemistry - Transition Metals — A-Levels A-Level Chemistry Practice Questions Online
This page contains 145 practice MCQs for the chapter Inorganic Chemistry - Transition Metals in A-Levels A-Level Chemistry. The questions are organized by difficulty — 47 easy, 71 medium, 27 hard — so you can choose the right level for your preparation.
Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit.