Problems |
10.1) |
What are the values of bond angles and dipole moments in H2O, H2S and H2Se? How can you rationalise these? |
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10.2) |
Among C - F, C - Cl, C-Br and C - I which are stronger bonds? Can you rationalise the relative ordering of their bond strengths? |
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| 10.3)
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What is the dipole moment of a system wherein a charge of +2e is separated from a charge of -2e by 2 ? |
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| 10.4) |
If two molecules of the kind mentioned in problem ( 3 ) above are separated from each other by 5(this is the center to center separation between the two dipoles) what is the interaction energy between them when they are aligned a) in parallel, b) in antiparallel configuration, c) perpendicular to each other and d) at 45o with respect to each other? Keep the distance between the centers fixed in a) to d) . |
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| 10.5) |
Q (of eq. 10.10) multiplied by the molecular diameter can be expressed in the units of cm3. Is this the same as polarizability? |
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| 10.6) |
All molecules do not have a nonzero dipole moment. What is the corresponding statement for molecular quadrapole moments? Do all entities have a non - zero polarizability? |
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| 10.7) |
Four charges, +e, -e, +e and -e are located at the corners of a square of sides 1. What is the quadrapole moment of this square? |
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| 10.8) |
An ion of +ve charge is separated from a polarizable sphere of polarizability 10 -24 cm3 by 7. What is the interaction energy between them? (use eq 10.10). If the ion is removed and a dipole is placed in its position, what should be the strength of the dipole that gives the above value of ion - induced dipole energy? |
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