Approx. 75 % of the elements in the peroidic table are metals.
the peroidic table
They are organised in order of increasing atomic number e.g. the number of protons they have.
they are classified according to their chemical properties....their weight, mass, iaonizaion potential and the like....
I believe they are Gasses, Metals, Non-Metals and Liquids, although I could be wrong.
K is potassium
I assume you're talking about (and looking for) the online peroidic table in the related links section. In which case, it's in the related links section.
See the link below
Cesium
look on webelementsTM peroidic table scholar edition for the answer.
What is the fift element of the peroidic table
just about every kind of gas but the main is nitrogen then oxygen if you look on the peroidic table of elements there will be a group called the noble gases those are the gases in the air