Learning objective
Define a transition metal as a d-block element forming at least one ion with an incomplete d subshell.
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Topic
Transition metals (A-level only)
Subtopic
Transition-metal characteristics (A-level only)
Study support
Understand this objective
Quick explanation
Define a transition metal as a d-block element forming at least one ion with an incomplete d subshell
- This point belongs to Transition metals (A-level only), especially Transition-metal characteristics (A-level only).
- You need to be able to define a transition metal as a d-block element forming at least one ion with an incomplete d subshell.
- The key ideas to know are transition metal and d-block.
- Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.
Key concepts
Why it matters
This objective helps connect Transition-metal characteristics (A-level only) to exam-style questions, flashcards, and revision notes for Transition metals (A-level only).
Quick student answer
Which of the following is a characteristic of transition metals?
Direct answer
They can form colored compounds.
Key terms
- Ligand: A ligand is a molecule or ion that donates a pair of electrons to a central metal atom to form a coordination complex.
- Coordination number: The coordination number is the number of ligand donor atoms bonded to the central metal atom in a complex.
Common trap
Confusing transition metals with main group elements: Remember that transition metals are defined by their ability to form ions with incomplete d subshells, while main group elements do not have this characteristic.
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Revision tools
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Revision notestopic notes
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Open revision notesRelated learning objectives
- Explain variable oxidation states in transition metals.
Transition-metal characteristics (A-level only)
- Explain why transition-metal ions are often coloured.
Transition-metal characteristics (A-level only)
- Explain catalytic activity of transition metals and their compounds.
Transition-metal characteristics (A-level only)
- Define ligand and coordinate bond.
Complex ions and ligand substitution (A-level only)
- Explain coordination number in complex ions.
Complex ions and ligand substitution (A-level only)