AQA A-Level Chemistry- Atomic Structure Review Questions and Answers

What are nucleons? Nucleons are protons and neutrons in the nucleus. What is the position of protons? Nucleus What is the relative mass of a proton 1 What is the relative charge of a proton? +1 What is the position of neutrons? Nucleus What is the relative mass of a neutron? 1 What is the relative charge of a neutron? 0 What is the position of electrons? Orbitals What is the relative mass of an electron? 1/1800 What is the relative charge of an electron? -1 Define mass number Sum of protons and neutrons Define atomic number The amount of protons in the nucleus Number of neutrons is worked out by... Subtracting the atomic number from the mass number Define isotopes Atoms of the same element with the same number of protons but a different amount of neutrons Isotopes have similar chemical properties because... they have the same electron configuration Isotopes have varying physical properties because... they have different masses