Atomic Structure Using the Periodic Table to determine the Atomic Structure of the Elements

Periodic Table An Important Tool in Chemistry For each element Classification as metal or non-metal Structure of the atom Properties Physical properties: size, melting point, conducting electricity Chemical properties: how easily it reacts to form new substances

Important Elements to Memorize 1 18 H 2 13 14 15 16 17 He Li Be 3 4 5 6 7 8 9 10 11 12 B C N O F Ne Na Mg Al Si P S Cl Ar K Ca Mn Fe Co Ni Cu Zn Br Kr Ag Sn I Xe Au Hg Pb Rn U 3

Periodic Table An Important Tool in Chemistry 16 S 32.06 S 16 32.06

Organization of the Periodic Table Columns – Groups All the elements have similar chemical and physical properties All will chemically react in a similar way Names of groups Rows – Periods Elements have same number of energy levels

Bohr Model Diagrams Rules Identify the number of electrons using the Atomic Number Place dots as electrons starting from the center Maximum of electrons 1st =2, 2nd = 8, 3rd =8