Index to Course Material Index to Section 4
1) (b) - because a single bond is longer than a double bond
2) histidine
3) ethanol is a hydrogen-bonded liquid but ethanethiol cannot form
hydrogen-bonds
4) kinetic energy
5) van der Waals radius decreases from left to right
6) F = -grad(V) . i.e. the force is the negative of the gradient of the
potential
7) dielectric constant
8) In methanol, because of its lower dielectric constant
9) the term depending on the twelth power of the distance
10) approximately a third of the electronic charge
11) The O...O distance is approximately 2.8 angstroms. This distance
is less than the sum of the van der Waals radii.
12) the Coulomb force between charges
With thanks to David Moss
Last updated 14th May '96