CHEM 1000 Lecture Notes - Lecture 6: Noble Gas, Ion, Covalent Bond
Document Summary
Intro to bonding; ionic bonds; naming of ionic compounds. Core electrons- found in the innermost shell (lower energy levels) that feel pull from protons and do not participate in bonding. Valence electrons- outermost shells (higher energy levels) are not held tightly and participate in bonding. Lewis dot diagram- put the chemical symbol and then dots around it to represent the valence electrons. Fact-noble gases are inert (do not undergo chemical reactions). Theory-inertness is a result of their configuration (8 valence electrons) Deduction- elements become less reactive electrons configuration matches to that of a noble gas. Ion- an atom in which the total number of electrons is not equal to the total number of protons, giving the atom a net positive or negative electrical charge. Metals- lose electrons to take on the electron structure of the previous noble gas, forming positive ions (cation)
