Electronic Theory of Valency: The Key to Bond Formation

The video explains the electronic theory of valency proposed by Kozel and Levis in 1916, focusing on the stability of noble gases. Noble gases like helium, neon, and others are stable due to their electron configurations, which prevent them from forming polyatomic molecules. The video details the electron configurations of noble gases, particularly neon, and introduces the concepts of octet and duplet configurations, highlighting their role in the stability of these elements.

How does the presence of eight electrons in the outermost energy level contribute to the stability of noble gases?

What is the exception in the electronic configuration of helium compared to other noble gases?