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Ch 5-7 Test


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electron affinity

energy required to add an electron

ionization energy

energy rquired to remove an electron

lattice energy
energy required to break up an ionic solid into its gaseous states

trends for ionization energy
+ up + right
trends for electron affinities
+ up + right
trends for atomic radii
+ left + down
trends for metallic character
+ left + downn
born haber cycle
overall energy change and how ther next process is the sum of the individual steps
rule for transition metal configurations
for ions, remove s before d orbitals
anamulous configuration elements
Cr, Cu, Mo, Ag
when is lattice energy negative
when going from elements to compound
order of processes for diatmic molecules

which are halfs

check for what
change of state (1/2)
break apart (1/2)
electron affinity (1)

check to see whether problem specifies energy for diatomic or for element
J x S = ?
Kg x M^2/ S
E = (2)?
h x nu

h x c/wavelength
c= ?
nu x wavelength
wavelength = ?
h / v x m
quantam mechanical model

electrons move in undefined paths
impossible to know exactly where an electron is
visible wavelength
380-780 nm
ultaviolet, infared, radio, microwave, x ray, gamma, visible

order highest to lowest energies
gamma, x ray, ultraviolet, visible, infared, microwave, radio
hunds rule
electron half fill shells for d, p shells
shielding electrons
electrons being repelled away from nucleus by electron within inner shells
born haber cycle problems

where does overall energy change and lattice energy get placed in equations (lattice energy negative when...)
equation equals energy change

lattice energy in equation (- for bonding electrons)
electronegativity trends
+ up + right
Zactual - electron shielding
formal charges

how to determine more favorable (2)
use to determine more likley dot structures

more electronegative element will have - charge

central element should have octet
7A colum

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