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molecular geometries and shit

Terms in this set (57)

2 electron groups
linear (180)
4 electron groups
tetrahedral (109.5)
3 electron groups
trigonal planar (120)
5 electron groups
trigonal bipyramidal (90, 120, and 180)
6 electron groups
octahedral (90 and 180)
AX2
linear (2 electron groups)
AX3
trigonal planar
AX2E
bent (<120) (3 electron groups)
AX4
tetrahedral
AX3E
trigonal pyramidal (<109.5)
AX2E2
bent (<109.5) (4 electron groups)
AX5
trigonal bipyramidal
AX4E
seesaw (90, <120, 180)
AX3E2
T-shaped planar (90, 180)
AX2E3
linear (180) (5 electron groups)
AX6
octahedral
AX5E
square pyramidal (90)
AX4E2
square planar (90)
AX2 polarity?
nonpolar
AX3 polarity?
nonpolar
AX4 polarity?
nonpolar
AX5 polarity?
nonpolar
AX2E3 polarity?
nonpolar
AX6 polarity?
nonpolar
AX4E2 polarity?
nonpolar
AX2E polarity?
polar
AX3E polarity?
polar
AX2E2 polarity?
polar
AX4E polarity?
polar
AX5E polarity?
polar
AX3E2 polarity?
polar
AX2 bond angle
180
AX3 bond angle
120
AX2E bond angle
<120
AX4 bond angle
109.5
AX3E bond angle
<109.5
AX2E2 bond angle
<<109.5
AX5 bond angle
90, 120, 180
AX4E bond angle
90, <120, 180
AX3E2 bond angle
90, 180
AX2E3 bond angle
180
AX6 bond angle
90, 180
AX5E bond angle
90
AX4E2 bond angle
90
ionization energy exceptions
1. group 5A nonmetals > group 6A
2. group 2A (first 3) > group 3A (first 3)
what is the exception for electron affinity? (think delta H)
only the first EA is exothermic
Mostly covalent EN difference?
EN difference <0.4
polar covalent EN difference?
EN difference > 0.4 but <1.7
ionic EN difference?
EN difference >1.7
hydrogen electronegativity
2.1
iodine electronegativity
2.5
bromine electronegativity
2.8
chlorine electronegativity
3
true or false: when comparing lattice energy, ionic compounds will always be higher than covalent compounds
true
what is the exception to MO filling for O2, Ne2, and F2?
sigma 2P < pi 2P
bond order for MOs
1/2 [ (bonding MO e-) - (nonbonding MO e-) ]
resonance hybrid bond order
#bonds / #atoms around central atom
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