10.1, 10.3 Bonding Models, Representing Valence Electrons with Dots

10.1 Bonding Models and AIDS Drugs 10.3 Representing Valence Electrons

Lewis model

a simple model of chemical bonding using diagrams that represent bonds between atoms as lines or pairs of dots

octets, minimal

In the Lewis model, atoms bond together to obtain stable _______ (8 valence electrons). The Lewis model can be used to make predictions about stability and structure of molecules with minimal computation.

Lewis electron-dot structures

aka Lewis structures, a drawing that represents chemical bonds between atoms in molecules as shared or transferred electrons; the valence electrons of atoms are represented as dots in a Lewis structure

Lewis symbol

the symbol of an element surrounded with dots representing the element’s valence electrons

group

The number of valence electrons for any main group is equal to the _____ number of the element (except for helium).

octet

the 8 dots around atoms in a Lewis structure that signify a filled outer electron shell for s and p block elements

duet

a Lewis symbol with 2 dots, signifying a filled outer electron shell for the elements H and He

chemical bond

the sharing or transfer of electrons to attain stable electron configurations for the bonding atoms

octet rule

the tendency for most bonded atoms to possess or share 8 electrons in their outer shell to obtain stable electron configurations and lower their potential energy

false

(true/false) When applying the Lewis model, we try to calculate the energies associated with the attractions and repulsions between electrons and nuclei on neighboring atoms.