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CHEM 131: Inorganic Chemistry I (Assignment 1, due date: Oct 22, 2009)
1.
BrCl
3
BrF
4

Br
Cl
Cl
Cl
Br
Cl
Cl
Cl
T shape
Br
F
F
F
F
Br
F
F
F
F
Square planar (nonpolar)


P(CH
3
)
2
Cl
3
P
C
Cl
Cl
Cl
P
Cl
Cl
Cl
CH
3
CH
3
Trigonal Bipyramidal
H
H
H
C
H
H
H
XeO
2
XeO
2
F
2
Xe
O
O
Xe
O
O
Vshape
Xe
O
F
F
Xe
F
F
O
T shape
2.
Solution
:
They are radial probability functions and correspond to 3s, 3p and 3d,
respectively.
3.
Solution:
S
N
O
F
O
N
S
F
F
N
O
S
a) + b)
Base on the formal charge, structure (3) is most unstable.
Base on the chemical knowledge, structure (2) is most likely dominant
Lewis structure in the resonance since N=O bond is stronger than N=S bond
c)
(1)
(2)
(3)
+1
0
0
1
0
+1
0
1
+1
1
1
+1
4.
Solution:
P: sp
3
O: approximately sp
Sb: sp
3
d
2
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5.
Solution:
Fe:
1s
2
2s
2
2p
6
3s
2
3p
6
4s
2
3d
6
[Ar]4s
2
3d
6
Fe
2+
:
1s
2
2s
2
2p
6
3s
2
3p
6
4s
2
3d
6
[Ar]3d
6
Ir:
1s
2
2s
2
2p
6
3s
2
3p
6
4s
2
3d
10
4p
6
5s
2
4d
10
5p
6
6s
2
4f
14
5d
7
[Xe]6s
2
4f
14
5d
7
Ir
3+
:
1s
2
2s
2
2p
6
3s
2
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