| Date | May 2011 | Marks available | 1 | Reference code | 11M.1.HL.TZ2.29 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 2 |
| Command term | Question number | 29 | Adapted from | N/A |
Question
The diagram below shows some of the energy levels available to an electron in a caesium atom.
Photons of energy 0.9eV pass through a sample of low pressure caesium vapour. Which of the following gives the energy transition of the electron when a photon is absorbed?
-
From -3.9eV to 0
-
From -2.5eV to -1.6eV
-
From -1.6eV to -2.5eV
-
From 0 to -3.9eV
Markscheme
B
Examiners report
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