CHEM 2OA3 Chapter Notes - Chapter 1: Pauli Exclusion Principle, Linear Combination Of Atomic Orbitals, Euclidean Vector
8 Feb 2016
School
Department
Course
Professor
Document Summary
Organic compounds are often difficult to isolate and purify, and when heated, 1. 2 they decompose more readily than inorganic compounds. Substances are defined by a specific arrangement of atoms: ex. Both have same molecular formula (ch4n2o), yet they differ in how the atoms are connected (constitution) Constitutional isomers: different physical properties and different names. Valence: describes the number of bonds usually formed by each element. Covalent bond: two atoms sharing a pair of electrons. When electrons are shared to form a bond, there is a decrease in energy. Electrons are capable of moving in such a way so they can minimize the repulsive forces and maximize the attractive forces with the nuclei. Lowest energy state determines the bond length and the bond strength. Atoms tend to bond in such a way so as to achieve the electron configuration of a noble gas. Formal charge: associated with any atom that does not exhibit the appropriate number of valence electrons.
