[student123]

Do someone know how some special molecules are formed? Is there different kind of chemical bond. I know molecule of hydrogen peroxide. It has two hydrogen atoms and TWO OXYGEN ATOMS. If you execute the covalent 
bond, which is definitely (as I think) in that molecule than you determine that there is something wrong. If you have oxygen and hydrogen than is formed water or hydrogen oxide. But sometimes can be formed hYdrogen peroxide, and my question is when are terms good for forming of this compound and how it is formed (which bond is there and how are electrons placed in molecule).

[Hunter2]

http://en.wikipedia.org/wiki/Hydrogen_peroxide