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Bonding Chapter 8

AP Chem

QuestionAnswer
what is the energy required to break a bond? bond energy
this form of bonding consists of a metal with a nonmetal ionic
what law can be used to calculate the interaction energy between a pair of ions? coulomb's law
what is coulomb's law? e = (2.31 x 10^-29 J nm)(Q1Q2)/r
what kind of bonding shares electrons? covalent bonding
what is the name for the ability of an atom to attract shared electrons to itself? electronegativity
describe the trend in electronegativity on the periodic table. increases accross a period and decreases down a group
what type of bond has zero electronegativity? covalent
what type of bond has a large electronegativity? ionic
what type of bond is intermediate? polar covalent bond
what is a dipole? a molecule with a negative and positive center of charge
this is a bond between two nonmetals. covalent bond
relate size to nuclear charge size decreases as nuclear charge increases.
what is lattice energy? the change in energy that takes place when separated gaseous ions are packed together to form and ionic solid
lattice energy can be calculated using which changed law? coulomb's law with the constant as k
what is the equation for percent ionic character? (measured dipole moment of x-y/ calculated dipole moment of x-y) * 100%
describe the trend between ionic character and electronegativity ionic character increases with electronegativity
why do chemical bonds occur? to seek the lowest possible energy
endothermic or exothermic has a negative sign? exothermic
endothermic or exothermic has a positive sign? endothermic
rule for the change in bond energies change H = energy required-energy released
what are lone pairs? pairs of electrons localized and unbonded on an atom
what are bonding pairs? electrons found between the atoms in space that are bonded
what rule do most elements obey when forming lewis structures? octet rule
name exceptions to the octet rule period 3 elements, boron
what is resonance? more than one bond position
given the designation what is the name: AB2 linear (180)
given the designation what is the name: AB3 trigonal planar (120)
given the designation what is the name: AB4 tetrahedral (109)
given the designation what is the name: AB5 trigonal bipyramid (90)
given the designation what is the name: AB6 octahedral (90)
given the designation what is the name: AB2E bent/angular (120)
given the designation what is the name: AB3E trigonal pyramid (107)
given the designation what is the name: AB4E seesaw.sawhorse (90 and 120)
given the designation what is the name: AB5E square pyramid (90)
given the designation what is the name: AB2E2 bent/angular (105)
given the designation what is the name: AB3E2 t-shape(90)
given the designation what is the name: AB4E2 square planar (90)
given the designation what is the name: AB2E3 linear (180)
given the designation what is the name: AB3E3 t-shape (90)
given the designation what is the name: AB2E4 linear (180)
Created by: conradm92
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