# Bonding Symbols?

#### FeDeX_LaTeX

Gold Member
Hello;

I don't understand the symbols drawn on this diagram;

http://upload.wikimedia.org/wikipedia/commons/8/8e/Wasserstoffperoxid.svg

I understand that the bond between the two oxygen atoms is a single sigma bond (illustrated by a -), but what are the bonds between the oxygen and hydrogen atoms on both sides (a thicker, triangular bond line and dotted lines)?

Thanks.

#### Rajini

hi,
it is just a representation to understand that the bond, which connects H and O, are perpendicular to each other!

#### Borek

Mentor
Not perpendicular, just one is below the surface while another is above. Most often these are tetrahedral, but not necessarily, there is no rigid convention behind.