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[Chemical Knowledge]：Difference between argon and helium

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Argon and helium are common rare gases, which are widely used in physical, chemical and industrial fields. This article will introduce you to the characteristics and differences between argon and helium to help you better understand their uses and characteristics. The chemical symbol of

argon is Ar, and its atomic number is 18, which belongs to light rare gas. Argon is a colorless, odorless and tasteless gas, which is an inert gas and is not easy to react with other elements. Argon is about 1.38 times heavier than air and denser, so it can be used to fill light bulbs and reduce the shooting power of bows and arrows in industrial and scientific fields.

and helium has the chemical symbol He and atomic number 2, it is also a rare gas. Helium is the second lightest element in the universe, four times lighter than air. It is a colorless, odorless, non-toxic gas that can become liquid at low temperatures. Helium has a very low boiling and freezing point, so it is often used for low-temperature experiments, cooling of electronic equipment, and inflation of balloons. The main difference between

argon and helium is their atomic nature and field of application. Argon is a monatomic gas, no chemical bonds between atoms, high stability, often used in the protection of gas, spectral analysis and other fields. Helium is an inert element, but it is a diatomic gas. Two helium atoms form a weak chemical bond by sharing electrons, so a weak chemical reaction can occur under certain conditions.

In the field of application, argon is mainly used for welding, laser refrigeration, gas discharge and so on. Because argon is heavier, injecting it into the bulb or vacuum tube can reduce the evaporation of conductive materials and extend the life of the bulb. Argon can also be used in nuclear energy research and medical imaging.

In contrast, helium has a wider range of applications. In the medical field, helium can form ultrasound images and perform respiratory therapy. In the industrial field, helium is mainly used for cooling electronic equipment, leak detection, semiconductor manufacturing, etc. In addition, helium can also be used for the inflation of various balloons and aircraft such as helium balloons, helium airships and helium airplanes.

In general, there are some differences between argon and helium in chemical properties, atomic properties and application areas. Understanding these characteristics can help us better understand and apply these two gases. I hope this article can be helpful to you, if you need more information, please feel free to contact us.

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