chapter 7.  ELEMENTS OF GROUPS 16, 17 AND 18 class 12 chemistry textbook solution

3. Answer the following.

xviii. Give two uses of neon and argon


Neon (Ne):

  1. Neon Signs and Lighting: Neon is most famous for its use in neon signs and lighting. When an electrical current is passed through a sealed glass tube filled with neon gas, it emits a characteristic bright, colorful glow. This property makes neon an ideal choice for advertising signs, artistic displays, and decorative lighting.

  2. Cryogenic Applications: Neon has applications in cryogenics, where it is used as a cryogenic refrigerant. It is particularly useful for cooling and freezing samples in scientific and medical laboratories because it remains in a gaseous state at extremely low temperatures and can achieve temperatures close to absolute zero.

Argon (Ar):

  1. Welding: Argon is commonly used as a shielding gas in welding processes, such as Tungsten Inert Gas (TIG) welding and Gas Metal Arc Welding (MIG). In these applications, argon is used to protect the welding area from atmospheric gases like oxygen and nitrogen, preventing unwanted reactions and ensuring high-quality welds.

  2. Preservation of Reactive Materials: Due to its inert nature, argon is used to store and preserve highly reactive and sensitive materials. In research laboratories and industrial settings, argon is employed to protect substances like certain chemicals, metals, and semiconductor materials from reacting with moisture or oxygen in the air.

These are just a few of the many applications of neon and argon in various industries and scientific fields. Their inert properties make them valuable in environments where reactivity and contamination must be minimized.

chapter 7.  ELEMENTS OF GROUPS 16, 17 AND 18 Textbook Solution page 164