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find wavelength when electron jups energy level:
λ=hc/(R(n1-2-n2-2)
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wavelength when given speed and mass
E=h/m(kg)*v(m/s)
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Quantom numbers:
~n
N= integers 1,2,3...
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quantom numbers:
~L
0,1,2,3,...,(n-1)
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plancks constant
6.626x10-34
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e=
(with h and v)
h*v=hc/λ
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quantom numbers
~ml
-l...0...+l
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quantom numbers
~ms
+1/2 or -1/2
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Born-haber cycle
ΔHf=ΔH1+ΔH2+ΔH3+ΔH4+ΔH5
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elecronegativity trends
- increase:
- ^>
- F has highest elecrtonegativity
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formal charge
fc=
valence e--lone pair e--1/2 bonding e-
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ΔHrxn
Σ(ΔH breaking bonds)+Σ(ΔH forming bonds)
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Molecular geometry:
2 groups
- Linear
- 180o
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molecular geometry:
3 groups
- trigonal planer
- 120o
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molecular geometry
4 groups
- tetrahedral
- 109.5o
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molecular Goemetry
5 groups
- trigonal bipyramidal
- 90o and 120o
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molecular geometry
6 groups
- Octahedral
- 90o
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CH3 will always have what molecular geometry?
tetrahedral
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Molecular geometry:
~effect of lone pairs:
occupy more space, affect polarity and geometry (2 bonded legs and 2 lone pairs will make BENT)
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Hybrid orbitals
#legs=2
2sp
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Hybrid orbitals
#legs=3
3sp2
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Hybrid orbitals
#legs=4
4sp3
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Hybrid orbitals
#legs=5
5sp3d
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Hybrid orbitals
#legs=6
6sp3d2
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all _____ bonds are sigma bonds
single
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The first of each multiple bonds are ____ bonds, then the rest are ___ bonds
Sigma, Pi
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Sigma bonds DO NOT exist in which type of overlap?
a) s-s
b) s-d
c) s-p
d) p-p end
e) s-hybrid
f) hybrid-hybrid
B
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