A-LEVEL CHEMISTRY EXAMINATION -2026
TRANSITION METALS
(Inorganic Chemistry – Advanced Level)
Qualification: A-Level Chemistry (AQA Specification)
Paper Code: 7405/2
Topic Area: Transition Metals & Their Chemistry
Date: __________________________
Time: __________________________
Duration: 2 Hours
Total Marks: 80
INSTRUCTIONS TO CANDIDATES
Answer ALL questions in Section A and ANY TWO questions from Section B.
Write all answers clearly and show full working where calculations are required.
Include balanced equations, ionic equations, and state symbols where
appropriate.
Use correct chemical terminology and oxidation states.
A Data Booklet is provided.
Use of a scientific calculator is permitted.
,ASSESSMENT FOCUS
Properties of transition metals (variable oxidation states, complex formation)
Ligands and coordination chemistry
Shapes of complex ions and isomerism
Colour changes and electronic transitions
Redox reactions and electrode potentials
Catalytic activity of transition metals
CANDIDATE DETAILS
Full Name: ____________________________________________
Candidate Number: _____________________________________
Centre Number: ________________________________________
Signature: ____________________________________________
FOR EXAMINER’S USE ONLY
Section Marks Available Marks Awarded
A 40
B 40
Total 80
, Transition Metal
Metal that can form one or more stable ions with a partially filled d sub-level.
Scandium isn't a TM because...
Has an empty d-shell when Sc3+
Zinc isn't a TM because...
Has a full d-shell when Zn2+
Which 2 TM have 1 electron in 4s sub-level to give stability?
Chromium and Copper
Which sub levels electrons fill up first and empty first?
4s
What physical properties do they have?
High density
High melting and boiling points
Similar ionic radii
TRANSITION METALS
(Inorganic Chemistry – Advanced Level)
Qualification: A-Level Chemistry (AQA Specification)
Paper Code: 7405/2
Topic Area: Transition Metals & Their Chemistry
Date: __________________________
Time: __________________________
Duration: 2 Hours
Total Marks: 80
INSTRUCTIONS TO CANDIDATES
Answer ALL questions in Section A and ANY TWO questions from Section B.
Write all answers clearly and show full working where calculations are required.
Include balanced equations, ionic equations, and state symbols where
appropriate.
Use correct chemical terminology and oxidation states.
A Data Booklet is provided.
Use of a scientific calculator is permitted.
,ASSESSMENT FOCUS
Properties of transition metals (variable oxidation states, complex formation)
Ligands and coordination chemistry
Shapes of complex ions and isomerism
Colour changes and electronic transitions
Redox reactions and electrode potentials
Catalytic activity of transition metals
CANDIDATE DETAILS
Full Name: ____________________________________________
Candidate Number: _____________________________________
Centre Number: ________________________________________
Signature: ____________________________________________
FOR EXAMINER’S USE ONLY
Section Marks Available Marks Awarded
A 40
B 40
Total 80
, Transition Metal
Metal that can form one or more stable ions with a partially filled d sub-level.
Scandium isn't a TM because...
Has an empty d-shell when Sc3+
Zinc isn't a TM because...
Has a full d-shell when Zn2+
Which 2 TM have 1 electron in 4s sub-level to give stability?
Chromium and Copper
Which sub levels electrons fill up first and empty first?
4s
What physical properties do they have?
High density
High melting and boiling points
Similar ionic radii
