Question detail
What defines a transition metal?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Transition metals (A-level only)
Question
- A. A d-block element forming at least one ion with a complete d subshell
- B. A d-block element forming at least one ion with an incomplete d subshell
- C. A p-block element forming at least one ion with an incomplete d subshell
- D. A s-block element forming at least one ion with a complete d subshell
Answer
A d-block element forming at least one ion with an incomplete d subshell
Explanation
A transition metal is defined as a d-block element that can form at least one ion with an incomplete d subshell, which is a key characteristic that distinguishes them from other elements.
Common mistake
Confusing Isomer Types
Students often confuse cis-trans isomerism with optical isomerism in complex ions.
To fix this, remember that cis-trans isomerism involves different spatial arrangements of ligands around a central metal ion, while optical isomerism involves non-superimposable mirror images due to chiral centers. Clearly identify the type of isomerism based on the structure of the complex ion.
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