Electron Configurations & the Periodic Table pg. 302-313 LO: I understand the connection between electron configurations of elements and their placement.

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Electron Configurations & the Periodic Table pg LO: I understand the connection between electron configurations of elements and their placement in the periodic table (PT).

Electron Configuration & Periodic Table Periods (rows) = QN1 _____________ Groups/families (columns) Have the same chemical behavior due to the # of valence electrons they all possess.

Valence vs. Core Electrons Valence Electrons: Electrons in the principal shell— outermost electrons. Electrons with highest “n” number. Participate in chemical reactions Core Electrons: Electrons that are not in the outermost principal shell. Do not participate in chemical reactions

Valence vs. Core Electrons What are the valence electrons for each element? (figure out electron configuration first) 1.P 2.Cu 3.Br