RULES FOR DRAWING LEWIS STRUCTURES

1.    Count the number of valence electrons.

2.    Arrange atoms (often around a unique central atom).

3.    Draw single bonds between connected atoms.

4.    Fill octets around outer atoms with lone pairs (excluding H atoms).

5.    Put remaining electrons around central atom (even if more than octet).

6.    If less than octet around central atom, make multiple bonds.