SNC 2D – Chemistry The Ion: A Charged Atom Worksheet For each of the following elements listed below, draw the dot diagram for the neutral atom and then write the atom’s most common ion. [element Element 1 H 1 7 𝒂𝒕𝒐𝒎𝒊𝒄 𝒎𝒂𝒔𝒔 𝒂𝒕𝒐𝒎𝒊𝒄 # ] Lewis dot Diagram Most Common Ion H Li 3 23 Na 11 39 Na+ K 19 9 Be 4 24 Mg Ca B 12 40 20 11 5 27 Al 13 Mg+2 N 14 7 31 P 15 16 O S 8 32 O-2 16 19 F Cl 9 35 17 4 He 2 20 Ne 10 40 Ar 18 none SNC 2D – Chemistry Lewis Dot Diagrams & Ion Formation Metal Lewis Dot Ion NonMetal Lewis Dot Ion Mg Mg Mg+2 N N N-3 Li F Ca O Na O Be Cl K N Ionic Compound Name Symbol Mg3N2 Magnesium nitride