Every element can be transformed into a gas at a certain temperature. At 0°C the elements in their gaseous form are Hydrogen, Helium, Nitrogen, Oxygen, Fluorine, Neon, Chlorine, Argon, Krypton, Xenon, and Radon. read more
In a periodic table, the elements arranged in vertical columns are known as Groups. The elements arranged in horizontal rows are known as Periods. Group 1 is also called the Alkali Metal group. read more
The six noble gases are found in group 18 of the periodic table. These elements were considered to be inert gases until the 1960's, because their oxidation number of 0 prevents the noble gases from forming compounds readily. read more