An astrophysicist analyses a silicon sample extracted from a carbonaceous chondrite meteorite. The table shows the percentage abundance of the three stable isotopes of silicon in this extraterrestrial sample:
| Isotope | 28Si^{28}\text{Si}28Si | 29Si^{29}\text{Si}29Si | 30Si^{30}\text{Si}30Si |
|---|---|---|---|
| Percentage abundance (%) | 91.2 | 5.3 | 3.5 |
Calculate the relative atomic mass of the silicon in this meteorite sample. Give your answer to one decimal place.
41 exam-style questions on Edexcel IGCSE Chemistry Atomic structure. Each one has a worked solution and a mark scheme showing where the marks go.