An electron in an atom is in allowed orbit A. The atom then absorbs electromagnetic radiation twice in succession. Each time, 3.0 × 10-19 J of energy is transferred to the electron. The table shows the energy of each allowed orbit relative to orbit A.
| Orbit | Energy relative to orbit A (J) |
|---|---|
| A | 0 |
| B | 3.0 × 10-19 |
| C | 6.0 × 10-19 |
| D | 8.0 × 10-19 |
Which orbit does the electron occupy after both absorptions? Explain your answer.
103 exam-style questions on Edexcel GCSE Physics 6.1 Atomic structure and isotopes, covering 6.1.1 Structure of the atom, 6.1.2 Isotopes: atomic and mass number, 6.1.3 Sub-atomic particles: masses and charges, and 6.1.4 Electron orbits and energy changes. Each one has a worked solution and a mark scheme showing where the marks go.