French translation of 'piles'. (= 1  neat stack) pile f in a neat pile soigneusement empilÃ©s â The clothes were folded and in a neat pile. Les vÃªtements Ã©taient pliÃ©s et soigneusement empilÃ©s. to put sth in a pile empiler qch. to be stacked in a pile Ãªtre empilÃ© â The dirty plates had been stacked in a pile on the table.
Types Of Gases. There are many Types Of Gases. Gas is one of the four basic states of matter. The other three are plasma, liquid, and solid. There are so many types of gases that are usually categorized as bulk gases. Some of the most common ones include; Propylene, Nitrous Oxide, Nitrogen, Oxygen, Carbon Dioxide, Helium, Hydrogen, and Argon.
Noble Gases. The noble gases are the elements at the far right-hand column of the periodic table: helium, neon, argon, xenon, and radon. Because of the group they belong to, they each have a full valence shell or level. In the case of helium, a full valence shell has two electrons, and in the remaining noble gases, eight electrons make up a full valence shell.