| Date | November 2011 | Marks available | 2 | Reference code | 11N.2.sl.TZ0.2 |
| Level | SL | Paper | 2 | Time zone | TZ0 |
| Command term | Deduce | Question number | 2 | Adapted from | N/A |
Question
Isotopes are atoms of the same element with different mass numbers. Two isotopes of cobalt are Co-59 and Co-60.
Deduce the missing information and complete the following table.
Markscheme
Award [2] for all four correct.
Award [1] for two or three correct.
Examiners report
This was generally well answered and sub-atomic particles were well known although some gave 53 instead of 125 and Co was often given instead of I.
Syllabus sections
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