Inorganic Chemistry: 1,4-dibromo-2,5-dichlorobenzene is a
molecule with C2h symmetry: a) List all the
symmetry operations for this molecule. b) Write a set of 3x3 matrices
for that describe each operation. c) Using the
diagnols of each matrix (there should be four), produce a reducible
representation for the molecule. d) Using the
character table, reduce the reducible representation and identify
each irredicible representation.
consider space group Fdd2
1) What is point symmetry of an atom located at (0,0,Z)
2) give d-glides coordinates of Fdd2
3) what is multiplicity at a general position on Fdd2
4) Give a possible maximal non-isomorphic subgroup of Fdd2 that
would be considered a translationengleiche group. What is the
crystal system of this subgroup?
consider space group Fdd2
1) What is point symmetry of an atom located at (0,0,Z)
2) give d-glides coordinates of Fdd2
3) what is multiplicity at a general position on Fdd2
4) Give a possible maximal non-isomorphic subgroup of Fdd2 that
would be considered a translationengleiche group. What is the
crystal system of this subgroup?
(1) Show with the aid of diagrams the action of each of the
following symmetry operations on a point located at (x, y, z). C4
S4 {2 marks}
(2) With reference to a set of character tables, determine the
order of each of the following point groups. D2d Oh {2 marks}
(3) Determine the total degeneracy of each of the following
irreducible representations (). = 3Ag + B1u + 2B2u = A1g +
3Eg + 2T1g + T2u...
1. Explain on the basic operation of the n-channel JFET. Draw
the drain characteristics or output characteristics of the
mentioned JFET type and denote the important parameters on the
graph
2. Explain why the JFET is called a unipolar device. Your
explanation must be based on the n-channel or p-channel device
which is biased to operate as an amplifier
3. A JFET amplifier has a load resistance, RL= 500 kΩ. Find the ac
drain resistance, rd if the amplification factor,...