| Date | May 2009 | Marks available | 1 | Reference code | 09M.1.hl.TZ2.5 |
| Level | HL | Paper | 1 | Time zone | TZ2 |
| Command term | Deduce | Question number | 5 | Adapted from | N/A |
Question
The table below shows the number of protons, neutrons and electrons present in five species.
Which two species are isotopes of the same element?
A. X and W
B. Y and Z
C. Z and W
D. W and Q
Markscheme
D
Examiners report
[N/A]
Syllabus sections
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