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Periodic table and trends



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Gateway 125 126 130 Fall 2006 Studio 3c p1 Studio 3c 9 22 Periodic table and trends 1 Playing Mendeleev 2 LEDs Periodic trends in action 3 Doubleelectron Reading 7 8 7 11 p 307 316 Group assignments A Recorder B Reporter C Leader 1 Playing Mendeleev With your group arrange the elements you are given into a table that is periodic The table can be any shape and it does not have to be two dimensional The elements are written on cards that include the following information Symbol Resemblance to an actual elemental symbol is coincidental Oxide The basic oxide formed Density Gives the density of the element I P Ionization potential of the element Radius Atomic radius M P Melting point of the element Keep in mind that the purpose of the periodic table is to organize elements in a way that helps us to predict their properties and reactivity without having to memorize what they are Also remember that exceptions to general trends in the periodic table do exist so you should consider more than just a single property in making your decisions One additional challenge to make the experience more like that of Mendeleev s there is a single element missing from the table that we would build based solely on modern periodic trends See if you can make predictions for the location and properties of this missing element Have a copy of your periodic table on paper to hand in and be prepared to present the rational behind your table to the class You GSI will be looking for the following criteria for assigning ICP Clearly and concisely explained trends Justified logical placement of and prediction of properties for missing element Creativity thinking outside the box Gateway 125 126 130 2 LEDs Periodic trends in action Fall 2006 Studio 3c p2 Gateway 125 126 130 Fall 2006 Studio 3c p3 3 Doubleelectron There is a far away planet called Doubleelectron The electrons on Doubleelectron can take on four different spins so that there are four electrons in each of the atomic orbitals 4 electrons in



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