1. Calculate the “characteristic rotational energy,” ℏ2/2I, for
the O2 molecule whose bond length is 0.121 nm.
2. What are the energy and wavelength of photons emitted in an l
= 3 to l = 2 transition?
Answers:
1) 1.79×10−4 eV
2) 1.16 mm
A 1H 127I molecule, with a bond length of 160 pm, absorbed on
the surface and rotates in two dimensions. A) Calculate the zero
point energy associated with this rotation B) What is the smallest
quantum energy that can be absorbed by this molecule in a
rotational excitation?
(a) The interhalogen molecule bromine monofluoride, BrF, has a
bond length of 176 pm and a dipole moment of 1.42 D. Calculate the
absolute electrical charge (in coulombs) on either end of the
dipole.
(b) Calculate the fraction of an electron’s charge on either end of
the dipole and determine the % ionic character of the Br-F
bond.
The H?X bond length is 105 pm and the H?Y bond length is 119 pm.
What is true about the bonding in H?X and H?Y? Select the correct
answer below:
Question 18 options:
There is greater orbital overlap between H and Y than between H
and X
There is greater orbital overlap between H and X than between H
and Y
H?Y is a stronger bond than H?X
The H?Y bond energy is greater than the H?X bond energy.
a) The rotational characteristic energy E0r for the
nitrogen molecule N2 is 2.48 x 10-4 eV. Find
the bond lenght of the molecule.
b) Write the electronic configuration of this molecule.
the rotation constant of CCl4 is 0.0572/cm. Evaluate the
rotational partition function explicitly and plot its value as a
function of temperature. At what temperature is the value within 5%
of the value calculated from the approximate formula
The bond length of 1H19F is 91.681 pm. The atomic masses in amu
are as follows: 1H - 1.0078, 19F - 18.9984.
Part A
Calculate the value of B.
Express your answer to four significant figures and include the
appropriate units.
*The answer is not: B=2098 1/cm
Part B
Calculate the spacing between lines in the pure rotational
spectrum of this molecule in units of s−1.
Express your answer using four significant figures.
*The answer is not: deltav= 4196 1/s