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CHEM 3010-01 INORGANIC CHEMISTRY (CRN=84172) Fall, 2006
17 August 2007 3010 - F06-E1.doc Page 1 of 5
EXAM 1
Name:
Date:
Answer all of the questions below. All answers should be legible and neat. Paper will be
provided for scratch work, which you will staple to your exam before you hand it in. Show
all work and reasoning for full credit. I cannot award credit for something you didn’t write
down. Each question is worth 4 points.
Electron Configurations
QUESTIONS 1) - 5). GIVE THE ELECTRON CONFIGURATION FOR THE FOLLOWING ATOMS AND IONS USING
NOBLE GAS CONFIGURATIONS ONLY.
Cu
Os(II)
Ti
4+
A +2 ion with nine 3d electrons. Give element symbol.
Bi
3+
CHEM 3010-01 INORGANIC CHEMISTRY (CRN=84172)
Molecular Structures & Shapes
QUESTIONS 6) - 10). FOR EACH OF THE FOLLOWING COMPOUNDS DO THE FOLLOWING:
1. DRAW THE LEWIS DOT STRUCTURE. INDICATE ANY NONZERO FORMAL CHARGES ON YOUR DRAWING.
2. DEDUCE VSEPR GEOMETRY. GIVE THE NAME OF THE 3 - DIMENSIONAL GEOMETRY AND APPROXIMATE
BOND ANGLES.
3. DETERMINE THE POLARITY OF THE COMPOUND.
- XeF 4
7) SF
6
8) SF
3
N
- [GaBr 4
]
10) SO
3
CHEM 3010-01 INORGANIC CHEMISTRY (CRN=84172)
QUESTIONS 16) - 21). ANSWER THE FOLLOWING QUESTIONS WITH RESPECT TO PHOSPHOROUS ACID,
(OH)
2
PHO.
Draw the Lewis structure.
Draw the VSEPR structure.
Identify all of the polar bonds in the molecule.
[Pauling eectronegativity values: H (2.21), O(3.34), P(2.19)]
Is the molecule polar? Explain your answer.
Assuming that only the polar-bonded H atoms are acidic, write a balanced equation for the
complete neutralization of phosphorous acid with sodium hydroxide.
- Give the equilibrium expression for the reaction you wrote in question 20).
CHEM 3010-01 INORGANIC CHEMISTRY (CRN=84172)
Quantum Numbers and Molecular Orbitals
- Which of the following statements is not true? Explain your choice.
a) l is the quantum number that describes shape
b) l can have integral values from 0 to n- 1
c) n is the princple quantum number
d) m l has only two possible values (+1/2 and – 1/2)
e) n can have integral values from 1 to infinity
Ionic Compounds
QUESTIONS 23) - 24) CONSIDER AN IONIC COMPOUND COMPOSED ONLY OF SODIUM AND OXYGEN
ATOMS TO ANSWER THE FOLLOWING QUESTIONS.
Give the correct formula for this compound.
What is the name of this compound?
Electromagnetic Spectrum
QUESTIONS 23) - 24) A PHOTON OF RED LIGHT WITH A WAVELENGTH OF 721 NM IS AT THE EDGE OF THE
VISIBLE REGION OF THE ELCTROMAGNETC SPECTRUM. ANSWER THE FOLLOWING QUESTIONS.
Calculate the energy of the photon.
To what region of the electromagnetic spectrum does a photon with a wavelength of 1600
cm
belong?
