Chem 481. Chapter 1. Atomic Stucture And Periodic Table Worksheet With Answers Page 7
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2
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5
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8
9
10b) Done on sketch below.
c) This would make it 3p.
2
2
4 π r
Ψ
Ψ
n = 2
It is a 2s orbital
r →
r →
30.
Consider the following plot of ionization energies across the periodic table. Use shielding arguments to rationalize the
observed variation in values.
(ignore for now)
31.
On the left-side graph below is a crude sketch of the radial component of one wave function of a hydrogen atom.
Ψ
r →
r →
a) At the right, sketch the corresponding radial probability density distribution function for this wave function.
b) If the total number of nodes is 2, identify the orbital both by its common name and the quantum numbers which
uniquely describe it.
c) If instead the total number of nodes is 4, would the sketch on the right still be a valid ] plot? If so, identify the
orbital both by its common name and the quantum numbers which uniquely describe it.
a) Done on sketch below.
b) Done on sketch below.
c) Yes it would still be valid. Now the number of angular nodes is 3, so it must describe a 5f orbital (n = 5, l = 3).
1 radial node, therefore 1 angular
node, so must be a 3p wavefunction
Ψ
r →
r →
32.
For the following molecules and ions, provide the Lewis structure and the VSEPR geometry (the central atom(s) are
underlined). Include any resonance, and show all non-zero formal charges. Indicate approximate bond angles around
the central atoms. And clearly indicate the isomers you choose if isomerism is possible.
SF
Cl
CH
F
HSSH
NHF
XeF
ICl
5
3
2
6
3
BeH
NO
F
GeH
XeO
TeF
SeCl
2
2
4
3
6
4
–
+
–
OCS
IF
[NH
]
[BrBr
]
BrNO
KrF
4
4
2
2
2–
2–
–
SO
[TeCl
]
NNO
IF
OSO
SCN
4
6
5
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