Daily Science 9/26 Write the shorthand electron configurations for the following: Ag I
Valence Electrons Pg. 37
Valence Electrons Determine chemical properties of an element Electrons in the outer most energy level To find valence electrons, add all numbers in the highest energy level. All atoms want filled valence shells (usually 8 electrons)
Li- 1s22s1 Na-1s22s22p63s1 Be- 1s22s2 Mg- 1s22s22p63s2 B- 1s22s22p1 Al- 1s22s22p63s23p1 C-1s22s22p2 Si-1s22s22p63s23p2 N- 1s22s22p3 P-1s22s22p63s23p3 O- 1s22s22p4 S- 1s22s22p63s23p4 F-1s2 2s2 2p5 Cl- 1s2 2s2 2p6 3s2 3p5 Ne-1s2 2s2 2p6 Ar- 1s2 2s2 2p6 3s2 3p6
Lewis Dot diagrams Also called electron dot structures Write element symbol Use dots to represent valence electrons One dot must go on each side before you can fill in second dot
Examples Valence and Lewis Dot for Ge, Te, Sr Valence for Pd and Zr