➤ Argon has been found in neurons, but its biological role has not been studied in detail.

➤ Inhalation of large concentrations of Argon leads to a pharyngeal reflex, dehydration of the nasopharyngeal mucosa, and the occurrence of dry eye syndrome and fainting.

➤  A small amount of Argon in the air causes vertigo, weakness and exhaustion, hypersomnia, cephalalgia, and memory loss.

➤ Argon anaesthesia - a mixture of 69% Ar, 11% N₂, 20% O₂, pressure 4 atm.

➤ It is used in surgical practice to create special anesthetic mixtures.

➤ Argon plasma coagulation is used in gynecology and argon lasers in ophthalmology.

➤ When mixing mixtures of Argon gases with oxygen, purified air is obtained, which has a disinfectant effect on surgical incisions.

➤ Argon is a simple toxic substance that causes asphyxiation.

➤ The antidote: fresh air.

➤ The Earth's atmosphere contains 66*1013 m of Ar.

➤ At the end of the 19th century, Frenchman Villard obtained Ar*6H₂O. crystallohydrate.

➤In the twentieth century, scientists obtained clathrate compounds of argon with H₂S, SO₂, HCl, etc.

➤ At a temperature of -185.9 °C, it is a liquid, and at a temperature of -189.4 °C, it is a solid.

➤ Glows blue-blue under the influence of electric current.

➤ Ar is naturally produced by the radioactive decay of ⁴⁰K.