Chapter 9 Key Terms Flashcards
Bond Energy
Energy to break 1 mol of gas state bond
Bond length
Average length of a bond
Bonding pair
Pair of electrons shared between two atoms
Born Haber Cycle
Hypothetical series of steps that represents formation of ionic compound
Chemical bond
Sharing or transfer of electrons to allow stable electron configurations
Covalent bond
Chemical bond involving sharing electrons
Dipole moment
Separation of positive and negative charge in a molecule
Double bond
Bond that forms when 4 electrons are shared between two atoms
Duet
A lewis structure with two dots
Formal charge
Charge that a lewis structure atom would have if all electrons were shared evenly
Electronegativity
Ability of an atom to attract electrons in a covalent bond
Free radical
A molecule or ion with an odd number of valence electrons
Ionic bond
Chemical bond involving switching of electrons
Lattice energy
Energy associated with forming crystal from ions
Lewis Dot Structure
Drawing representing chemical bonds between atoms as shared or transferred electrons
Lone pair
Electron pair not being shared
Metallic bonding
Bonds between two metals
Octet Rule
Most bonded atoms want 8 valence electrons
Octet
Lewis dot containing 8 electrons
Percent Ion Character
Ratio of actual dipole moment to theoretical ionic dipole moment
Polar covalent bond
Covalent bond between two atoms with different electronegativity
Resonance Hybrid
Actual structure of a molecule that is intermediate between two + resonances
Resonance structures
Two+ valid lewis structures that blend to cause actual shape
Triple bond
Bond formed when three electron pairs are shared
