Drawing molecules using Lewis Dot Structures Remember: atoms are sharing e- to complete their outer shell!

Chlorine Cl2 This is the finished Lewis dot structure How did we get here?

O O N N DOUBLE bond TRIPLE bond atoms that share two e- pairs (4 e-) atoms that share three e- pairs (6 e-) N N

Use Pencil Step 1 count total valence e- involved; this is your target number. No more! No less! Step 2 connect the atoms with single bonds **you may need to reconfigure the dots later… ahhhhh pencil Step 3 complete valence shells to make the atoms stable.

Let’s Practice! Share & Check to make sure all the atoms are “happy”. Just use dots…no x H2

Let’s Practice! Share & Check to make sure all the atoms are “happy”. Just use dots…no x O2

Let’s Practice! Share & Check to make sure all the atoms are “happy”. Just use dots…no x CH4

Draw the Lewis Dot Diagram for polyatomic ions Same thing! Just add or subtract electrons based on the charge, enclose in a giant bracket and write its charge. REMEMBER! A negative charge means it has extra electrons! Phosphate

Phosphate

The End