S3.1 The periodic table: Classification of elements (HL)
14 revision questions with answers for S3.1 The periodic table: Classification of elements (HL). Read them here, or play the set as a class game on the projector. Free to host, and students join with a code.
d-block element that is not a transition element?
- Iron
- ZincRight answer
- Copper
- Scandium
What this set covers
Transition elements at HL: the d-block versus zinc, ligands and coordination bonds, coordination number, oxidation states, d-orbital splitting and colour, paramagnetism, and catalysts in the Haber and contact processes.
- Common mix-up
- Students often assume every d-block element is a transition element: zinc is not, and Sc³⁺ is colourless because it has an empty 3d sublevel.
- Revision tip
- Use the colour wheel to practise one example: pick a complex, name the colour absorbed, and state the colour you see.
All 14 questions and answers
d-block element that is not a transition element?
Answer: Zinc
Molecule or ion that donates a lone pair to a central metal ion?
Answer: Ligand
Bond between a ligand and the central metal ion?
Answer: Coordination bond
Coordination number of copper in [Cu(NH₃)₄(H₂O)₂]²⁺?
Answer: 6
Oxidation state of copper in [CuCl₄]²⁻?
Answer: +2
Transition elements show variable oxidation states because 3d and 4s electrons are…?
Answer: Close in energy
Transition metal complexes are coloured because ligands make the d orbitals…?
Answer: Split in energy
Colour of a complex that absorbs orange light, using the colour wheel?
Answer: Blue
Colourless ion with an empty 3d sublevel?
Answer: Sc³⁺
Of these ligands, which causes the largest d-orbital splitting?
Answer: CN⁻
Unpaired electrons in a free Fe³⁺ ion (Z = 26)?
Answer: 5
Substance with unpaired electrons that is drawn into a magnetic field?
Answer: Paramagnetic
Transition metal used as the catalyst in the Haber process?
Answer: Iron
Industrial process catalysed by V₂O₅?
Answer: Contact process
Play it as a class game
Play this set opens it in splycr, where you can host it for your class straight away. Hosting needs no account: put the room code on the projector, and students join from a phone with the code and their first name. Each question plays as multiple choice, and the three wrong options were written for that question.