gázelemeket

Gázelemeket, often translated as "gas elements" or "gaseous elements," refers to the noble gases in chemistry. These are a group of six chemical elements comprising Group 18 of the periodic table. They are characterized by their very low reactivity due to having a full valence electron shell. The elements in this group are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). Oganesson (Og), a synthetic element, is also predicted to be a noble gas.

Noble gases are colorless, odorless, and monatomic gases at standard temperature and pressure. Their physical properties, such as boiling and melting points, are very low and increase with atomic number. Due to their inert nature, they were historically called "inert gases." However, they are now known to form compounds under specific conditions, particularly with highly electronegative elements like fluorine and oxygen.

Helium is the second most abundant element in the universe and is used in balloons, cryogenics, and welding. Neon is known for its use in lighting, producing a distinctive red-orange glow. Argon is the most abundant noble gas in Earth's atmosphere and is used in welding, lighting, and as a protective atmosphere in various industrial processes. Krypton and xenon are less common and are used in specialized lighting applications, such as high-intensity discharge lamps, and in lasers. Radon is a radioactive gas and is known for its health hazards.