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Helium is a very light and colorless gas. This special gas, which causes balloons to float, is also the second most abundant element in the universe. It is represented by the symbol “He” on the periodic table and has an atomic number of 2.Have you ever seen a floating balloon? The gas inside such balloons is usually helium. Because helium is lighter than air, it rises upward.How is it formed?Helium is formed inside very hot and dense stars. In this environment, hydrogen atoms combine to form hel

Argon is a chemical element belonging to the noble gas group and located in group 18 of the periodic table. Its symbol is "Ar" and its atomic number is 18. Argon is a colorless odorless and tasteless gas that exhibits a stable monatomic structure at room temperature. It constitutes approximately 0.93% by volume of the atmosphere making it the third most abundant gas after nitrogen and oxygen. Due to its extremely low tendency to react it is predominantly found in its free state in nature owing t

Radon is a radioactive noble gas with the symbol Rn and atomic number 86. It is colorless odorless and tasteless. It forms naturally through the decay of uranium and thorium minerals in the Earths crust. It remains in the air for a short time and poses health risks when inhaled.HistoryRadon was discovered in the early 1900s. Its name is derived from the word radio indicating its radioactive properties. Scientists have been studying the effects of radon on human health and the environment for man

Neon is a noble gas located in group 18 of the periodic table. This gas, with an atomic number of 10, is colorless and odorless at room temperature.What is it used for?Neon produces a bright light when electricity passes through glass tubes. For this reason, it is most commonly used in advertising signs and illuminated displays. When electrified, neon typically emits a red-orange light; this vivid color is highly noticeable at night. It is also used in scientific tubes and certain lighting appli