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Valence trends on the periodic table. The Rules: Metals can ONLY lose e - = positively charged Nonmetals can gain or lose e - gain = negatively charged lose = positively charged For valences, the metalloids are grouped either With the metals or nonmetals, depending which
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The Rules: Metals can ONLY lose e- = positively charged Nonmetals can gain or lose e- gain = negatively charged lose = positively charged For valences, the metalloids are grouped either With the metals or nonmetals, depending which Side of the line they are on
Li = 1s22s1 Li+ = 1s2 = He Ca = 1s22s22p63s23p64s2 Ca+2 = 1s22s22p63s23p6 = Ar +1 +2
+1 +2 +3 +4 +6 +7
+1 +3 +5 +7 S = 1s22s22p63s23p4 S+4= 1s22s22p63s2 S+6 = 1s22s22p6= Ne +4 +6 +2
-4 -3 -2 -1 S = 1s22s22p63s23p4 S-2 = 1s22s22p63s23p6 = Ar