Ionic and Covalent Bonds Polarity Chapter 8.1-8.4 Flashcards
____ bond involves the transfer of electrons from one atom (usually a metal) to another (usually a nonmetal).
ionic
in ionic bonds The resulting ions are _______ attracted to one another.
electrostatically
lattice energy
The energy required to completely separate a mole of a solid ionic compound into its gaseous ions
elements tend to stop losing electrons once they attain a noble gas configuration because
energy would be expended that cannot be overcome by lattice energies
covalent bond
share sufficient numbers of electrons in order to achieve a noble gas electron configuration
3 electrostatic interactions in these covalent bonds:
Attractions between electrons and nuclei
Repulsions between electrons
Repulsions between nuclei
polar covalent bond
is one in which the bonding electrons spend more time near one of the two atoms involved.
POLAR SIDES
Electronegativity (greedyness)
is a measure of the ability of an atom in a molecule to draw bonding electrons to itself
the electronegativity is less than 0.5 then the bond is
nonpolar
he electronegativity is 0.5>1.9 then the bond is
polarr
the electronegativity is greater than 1.9 then the bond is
ionic
When two atoms share electrons unequally, a bond____ results
dipole
The greater the difference in electronegativity, the more ____ is the bond.
polar
