ANALYTICAL CHEMISTRY PROBLEM SET I
Q1:a.Using the Valence Shell Electron-Pair Repulsion (VSEPR) model, predict the
shapes/geometries of
I. PCl3 III. CF3Cl
II. [ICl4]- IV. XeF2
b. Account for the shapes of the following compounds as predicted by the Valence Shell Electron-
Pair Repulsion (VSEPR) model of bonding.
I. Phosphorous acid, H3PO3, best represented as HP(O)(OH)2
II. XeO3, the noble gas oxide
Q2:a. Predict the geometry of the following molecules on the basis of the Valence Shell Electron-
Pair Repulsion (VSEPR) theory. Indicate clearly, the direction of any distortions from the ideal
geometry.
I. OXeF4 II. Ozone, O3
b. Compare the bond angles in water, H2O and F2O. Which of these two would have a larger bond
angle; thus H-O-H or F-O-F bond? Explain briefly your reason.
Q3:a.Briefly but clearly, explain the following terms:
II. Electronegativity II. δ- Bonds III. Π-Bonds
b. Write the electronic configuration of Chromium (Z=24)
Q4:a.What do you understand by the following
I. Dispersion (London) forces
II. Hydrogen bonding
III. Orbital
b. What is the designation for the sub-shell with n=5 and l=1, how many orbitals are in this
subshell? Indicate the values of ml for each of these orbitals.
Q1:a.Using the Valence Shell Electron-Pair Repulsion (VSEPR) model, predict the
shapes/geometries of
I. PCl3 III. CF3Cl
II. [ICl4]- IV. XeF2
b. Account for the shapes of the following compounds as predicted by the Valence Shell Electron-
Pair Repulsion (VSEPR) model of bonding.
I. Phosphorous acid, H3PO3, best represented as HP(O)(OH)2
II. XeO3, the noble gas oxide
Q2:a. Predict the geometry of the following molecules on the basis of the Valence Shell Electron-
Pair Repulsion (VSEPR) theory. Indicate clearly, the direction of any distortions from the ideal
geometry.
I. OXeF4 II. Ozone, O3
b. Compare the bond angles in water, H2O and F2O. Which of these two would have a larger bond
angle; thus H-O-H or F-O-F bond? Explain briefly your reason.
Q3:a.Briefly but clearly, explain the following terms:
II. Electronegativity II. δ- Bonds III. Π-Bonds
b. Write the electronic configuration of Chromium (Z=24)
Q4:a.What do you understand by the following
I. Dispersion (London) forces
II. Hydrogen bonding
III. Orbital
b. What is the designation for the sub-shell with n=5 and l=1, how many orbitals are in this
subshell? Indicate the values of ml for each of these orbitals.
