Two metals, Q and R, react separately with chlorine. Each sample initially contains the same number of metal atoms. The samples have the same total surface area, and all other reaction conditions are the same.
| Metal | Electron arrangement | Percentage of sample that reacts in 10 s (%) |
|---|---|---|
| Q | 2.8.2 | 21 |
| R | 2.8.8.2 | 62 |
Explain which metal is more reactive. Use the data and the electron arrangements in your answer.
122 exam-style questions on OCR GCSE Chemistry 2.2 Bonding, covering 2.2.1 Metals, non-metals and the Periodic Table, 2.2.2 Types of chemical bonding and dot and cross diagrams, 2.2.3 Limitations of bonding models, and 2.2.4 Reactivity, atomic number and the modern Periodic Table. Each one has a worked solution and a mark scheme showing where the marks go.