periodic table of chemical elements

these are the links for the periodic table of chemical elements. the first shows some history of the science. the second allows clicking on symbols for explanation.

http://en.wikipedia.org/wiki/Periodic_table
http://www.dayah.com/periodic/

O - oxygen
Si - silver
C - carbon
H - hydrogen
Cu - copper
Au - gold
Cl - chlorine
Fl - flourine
Hg - mercury

now each element has a "weight" and a molecule's weight is determined by the total weight of each chemical which it is made from. for example O2 or oxygen as in what we need to breathe in has a mocular weight of 2x8 which equals 16.

oxygen - 8
carbon - 6
chlorine - 17
flourine - 9
hydrogen - 1
nitrogen - 7

think carefully of the following. and a first grader can do maths so we'll start with oxygen or O2 which we've done before:

oxygen = O2 = 8x2 = 16
carbon dioxide = CO2 = 6+(8x2) = 22
chloroflourocarbon = ClFC = 17+9+6 = 32

doing the maths and given the molecular weight of Choroflourocarbons which is actually ClFC and NOT CFC which suggests carbon-flouro-carbon makes it IMPOSSIBLE for it to "float" up into the upper atmosphere, HOW CAN IT BE RESPONSIBLE FOR THE BREAKDOWN OF THE OZONE LAYER?? i mean, let's face it, carbon dioxide, the stuff we breathe out and that goes into balloons when we blow them up with our mouths doesn't exactly keep them up in the air and ClFC is twice has heavy.