4298023
Description
| Question | Answer |
| What is the relative mass and relative charge of a proton, neutron and electron? | Relative mass Relative charge Proton 1 +1 Neutron 1 0 Electron 1/2000 -1 |
| What is an isotope? | Isotopes are atoms with the same number of protons but different numbers of neutrons. This gives them different masses. |
| Why do isotopes of an element have the same chemical properties? | Because they have the same electron configuration and electrons are involved in chemical reactions. |
| When are ions formed? | Ions are formed when atoms gain or lose electrons. |
| How do you calculate relative atomic mass? | Add together (Mass number x Percentage/100) |
| What is an orbital? | A region that can hold up to two electrons with opposite spins. |
| Shape of an S-orbital? | Spherical. |
| How many electrons can an S, P and D orbital hold? | S- 2 electrons P- 6 electrons D- 10 electrons |
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