Question 1
Question detail
Why are transition metal ions often colored?
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. They absorb light in the visible spectrum due to d-d electron transitions
- B. They reflect all light equally
- C. They have no d electrons
- D. They are always in a gaseous state
Answer
They absorb light in the visible spectrum due to d-d electron transitions
Explanation
Transition metal ions are often colored because they can absorb specific wavelengths of light during d-d electron transitions, resulting in the complementary color being observed.
Common mistake
Misunderstanding Transition Metals
Students often confuse transition metals with all d-block elements, thinking all d-block elements are transition metals.
A transition metal is specifically defined as a d-block element that forms at least one ion with an incomplete d subshell. To clarify, remember that not all d-block elements meet this criterion. For example, zinc is a d-block element but is not considered a transition metal because it only forms Zn²⁺ with a complete d subshell.
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