Quick answer: Transition metals are d-block elements that form ions with a partially filled d subshell. This Chemistry 11-12 test on transition metals has 8 questions worth 20 marks, to do in 45 minutes: electron configurations, definition and read the complex. The mark scheme is on a separate page; free printable PDF.
This chemistry grades 11-12 test on transition metals test works like a real class test. The mark scheme is on a separate page, so revise with the lesson first.
First, this test checks electron configurations, complex ions, colour, ligand exchange, titration and catalysis. Then, answer all questions in full, show working and units. Also, you have 45 minutes and 20 marks are available.
Level: Chemistry grades 11-12 (A Level · IB · Class 11-12) · Curriculum: A Level 3.2.5
Transition metals test: the test questions
Question 1 Electron configurations (2 marks)
- First, write the electron configuration of a chromium atom. (1 mark)
- Next, write the electron configuration of Cu⁺. (1 mark)
Question 2 Definition (3 marks)
Answer both parts.- Define a transition element. (1 mark)
- Then, explain why zinc is not a transition element. (2 marks)
Question 3 Read the complex (2 marks)
- First, state the coordination number and shape of the complex. (1 mark)
- Also, the overall charge is 3+. Then, state the oxidation state of cobalt. (1 mark)
Question 4 Colour of a complex (3 marks)
Read each part carefully.- Also, explain why [Cu(H₂O)₆]²⁺ is blue. (3 marks)
Question 5 Ligand substitution (2 marks)
- Next, write the equation for copper(II) ions reacting with excess ammonia and state the colour of the product. (2 marks)
Question 6 Titration with manganate(VII) (4 marks)
Answer both parts.- 25.0 cm³ of iron(II) solution needs 20.00 cm³ of 0.0200 mol dm⁻³ KMnO₄ in acid: MnO₄⁻ + 8H⁺ + 5Fe²⁺ → Mn²⁺ + 4H₂O + 5Fe³⁺. Calculate n(MnO₄⁻). (1 mark)
- Then, calculate n(Fe²⁺). (1 mark)
- Then, calculate the concentration of the iron(II) solution. (2 marks)
Question 7 Catalysts (2 marks)
- Explain why transition metals and their compounds are good catalysts. (2 marks)
Question 8 Cisplatin (2 marks)
- First, state the shape of Pt(NH₃)₂Cl₂. (1 mark)
- Then, name the type of isomerism it shows. (1 mark)
