anion - An ion with a net negative charge, atomic number - The number that tells you the location on the periodic table and the number of protons in each atom of an element, cation - An ion with a net positive charge "Cats have paws"!, chemical bond - An attractive force that holds two atoms together, compound - A substance made up of two or more types of atom bonded together, electron configuration - The arrangement of electrons in shells around an atom's nucleus that follows the rule 2(n2), electron shell - A grouping of electrons around the nucleus of an atom, group - A column in the periodic table, molecule - A group of atoms bonded together, noble gas - An element that is in group 0 and is non-reactive due to its full valence shell, period - A row in the periodic table, valence electron - An electron in the outermost occupied shell of an atom that is available for chemical bonding, Alkali metals - Located in Group 1 and are very reactive, Alkali earth metals - Located in Group 2 and are nearly as reactive as Group 1, Halogens - Located in Group 17 and are very reactive non-metals, Group 16 - Contains the second most reactive non-metals, Electrostatic attraction - Present in ionic and metallic bonding when negatively charged atom is attracted towards a positively charged atom and vice-versa.,

LHS Year 10 Periodic table

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