Chemistry Key Words 4.5 / 5 based on 2 ratings ? ChemistryAllASOCR Created by: LivviR123Created on: 22-09-16 20:46 Orbital A region in an atom that can hold up to two electrons 1 of 17 Isoelectronic Having that same no. of electrons or the same electronic structure 2 of 17 Atomic number The no. of protons in the nucleus of an atom 3 of 17 Avogadro's constant The no. of atoms per mole of the carbon 12 isotope 4 of 17 Delocalised Electrons Electrons that are shared between atoms 5 of 17 Electron Configuration A shorthand rep. of how electrons occupy sub shells in an atom 6 of 17 Giant Covalent Lattice a 3D structure of atoms, bonded together by strong covalent bonds 7 of 17 Giant Ionic Lattice a 3D structure of oppositely charged atoms, bonded together by strong ionic bonds 8 of 17 Giant Metallic Lattice A 3D structure of pos ions and delocalised electrons bonded by s.m.b 9 of 17 Ion A changed particle 10 of 17 Ionic Bonding the electrostatic attraction between pos and neg ions 11 of 17 Molar Mass M mass per mole of a substance, units g/mol-1 12 of 17 Mole Amount of any substance containing as many particles as there are in 12g of carbon-12 13 of 17 Polyatomic Ion An ion containing more than 1 atom 14 of 17 Relative Atomic Mass (Ar) The weighted mean mass of an atom 15 of 17 Relative Isotopic Mass mass of an isotope compared . 1/12th of a carbon-12 atom 16 of 17 Relative Molecular Mass Weighted mean mass of a molecule of a compound compared with 1/12th the mass of an atom of carbon-12 17 of 17
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