CHEM 012 Chapter Notes - Chapter 1: Nitrogen Oxide, Beryllium, Electron Configuration
Document Summary
Definition and analysis: states that elements gain or lose electrons to attain an electron configuration of the nearest noble gas. Noble gases have complete outer electron shells, which make them very stable. Other elements also seek stability, which governs their reactivity and bonding behavior. Halogens are one electron away from filled energy levels, so they are very reactive. Elements always follow the octet rule because they always seek the most stable electron configuration so following the octet rule will help them fill up their s or p subshells. Lewis structure is used to help understanding the bonding between different elements. Electrons shared in a covalent bond are counted twice. For the octet rule, there should be eight electrons accounted for each atom. There are three types of ions or molecules that do not follow the octet rule: Ions or molecules with an odd number of electrons. Ions or molecules with less than an octet (mostly with boron or beryllium)
