| Date | May 2016 | Marks available | 1 | Reference code | 16M.1.hl.TZ0.10 |
| Level | HL | Paper | 1 | Time zone | TZ0 |
| Command term | Identify | Question number | 10 | Adapted from | N/A |
Question
Which best explains why transition metal complexes are coloured?
A. As electrons return to lower energy levels, light of a certain colour is emitted, and the complementary colour is observed.
B. As electrons return to lower energy levels, light of a certain colour is emitted, so the complex appears to have the same colour.
C. As electrons are promoted to higher energy levels, light of a certain colour is absorbed, and the complementary colour is observed.
D. As electrons are promoted to higher energy levels, light of a certain colour is absorbed, so the complex appears to have the same colour.
Markscheme
C
Examiners report
[N/A]
Syllabus sections
Additional higher level (AHL) » Topic 13: The periodic table—the transition metals » 13.2 Coloured complexes
Show 37 related questions
