Chapter 10 Modern Atomic Theory and the Periodic Table

groups of elements show similar chemicalproperties because of the similarity of theseoutmost electron configurationsthe periodic table illustrates several importantpoints:1. the number of the period corresponds withthe highest energy level occupied byelectrons2. the group numbers for the representativeelements are equal to the total number ofoutmost electrons in the atom3. the elements of a family have the sameoutmost electron configuration, but indifferent energy level4. the elements within each of the s, p, d, fblocks are filling the s, p, d, f orbitals5. within the transition elements some 16discrepancies in the order of filling occur