Atomic structure 0.0 / 5 ? ChemistryAtomic structureASAQA Created by: lohmeymCreated on: 07-04-14 14:30 Protons relative charge of +1 and relative mass of 1 1 of 13 neutrons relative charge 0 and relative mass 1 2 of 13 electrons relative charge -1 and relative mass 1/1840 3 of 13 nucleus centre of atom formed by protons and neutrons 4 of 13 nucleons protons and neutrons, which can be found in the nucleus 5 of 13 strong nuclear force force that holds protons and neutrons together 6 of 13 electrostatic forces force that holds electrons and protons together 7 of 13 Atomic number, Z number of protons 8 of 13 Mass number, M number of protons + number of neutrons 9 of 13 isotopes atoms of the same element with the same atomic number but different mass number 10 of 13 relative atomic mass (Ar) average mass of one atom of an element / (1/12)x the mass of one atom of C12 11 of 13 Ionisation energy is the energy required to remove one mol of electrons from one mol of atom in the gaseous state and is measured in kJmol 12 of 13 successive ionisation energies the energies required to remove the electrons one by one from an atom 13 of 13
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