| Date | May 2013 | Marks available | 1 | Reference code | 13M.1.sl.TZ2.3 |
| Level | SL | Paper | 1 | Time zone | TZ2 |
| Command term | Identify | Question number | 3 | Adapted from | N/A |
Question
Which is the best description of relative atomic mass, Ar?
A. The number of neutrons and protons present in the nucleus of an atom
B. The average number of neutrons and protons in all isotopes of an element
C. The weighted mean mass of naturally occurring isotopes of an element compared to the mass of an atom of carbon-12
D. The weighted mean mass of naturally occurring isotopes of an element compared to 1/12th of the mass of an atom of carbon-12
Markscheme
D
Examiners report
[N/A]
Syllabus sections
Show 77 related questions
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