modern periodic table 0.0 / 5 ? ChemistryThe Periodic TableGCSEEdexcel Created by: Jessica CarruthersCreated on: 13-04-13 12:17 what determines the position of an element in the periodic table the atomic (proton) number 1 of 5 what determines the chemical properties of an atom the number of electrons in the outer shell (the highest energy level) 2 of 5 why does the reactivity of metals in a group increase as you go down the group because metals lose electrons when they react 3 of 5 why does the reactivity of non-metals decrease as you go down the group because non-metals gain electrons when they react 4 of 5 in what way can we explain trends in reactivity as we go down a group the distance between the outer shell electrons and the nucleus AND the number of occupied inner shells in the atoms 5 of 5
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