The steadiness of an atom is dictated by its electron configuration, particularly the variety of electrons in its outermost shell, often known as the valence shell. Hydrogen, possessing just one electron, seeks to attain a secure electron configuration analogous to that of helium, a noble gasoline. Helium possesses two valence electrons, fulfilling the ‘duet rule’. Subsequently, hydrogen strives to accumulate one further electron to achieve this secure, helium-like configuration.
Understanding the drive for hydrogen to attain a secure electron configuration is key to comprehending its reactivity and its position in forming chemical bonds. This tendency underpins the formation of numerous molecules, together with water (H2O) and an enormous array of natural compounds. Its capability to both acquire or share an electron permits it to take part in each ionic and covalent bonding eventualities. The idea has been a cornerstone of chemical idea because the growth of the octet rule and the following refinement acknowledging exceptions like hydrogen.