![]() ![]() Each dot stands for a valence electron Chemical Bonds The force of attraction that holds two atoms together Chemical Reaction When a new substance is formed Oxidation numbers The charges on an element Nonmetals Lack most of the properties of metals and are poor conductors of electricity Metalloids These elements have properties of both metals and nonmetals(stair step) Demitri Menaducci A Russian scientist who discovered patterns in the periodic table Periodic table This shows the properties of elements Henry Mosley A British scientist who discovers a way to measure the positive charge on the atoms nucleus Periods This contains a series of different elements. Electron Dot diagram This is a diagram that includes the symbol for the element surrounded by dots.
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