Element 118, known as oganesson, is a synthetic element in the noble gas group of the periodic table. It was first synthesized in 2002 by a team of Russian and American scientists. Oganesson is highly unstable and has a very short half-life, making it difficult to study. Due to its position in the periodic table, element 118 is expected to exhibit unique properties that differ from other noble gases like xenon and radon. However, its extreme rarity and instability limit our understanding of its behavior and potential applications in science and technology.