3. (a) Using x, y, z vectors of each atom in a
SO2molecule to derive the reducible representation
(assuming that the principle axis is collinear with the z axis and
the molecule is lying on the xz plane).
(b) Classify the irreducible representations into translational,
rotational, and vibrational modes.
(c) Which vibrational modes are infrared active.
(d) Sketch the three vibrational modes including the symmetric
stretch, antisymmetric stretch, and symmetric bend.
(e) The calculated IR spectrum of SO2show three peaks...