The NO molecule has a double degenerate electronic ground state and a double degenerate excited state at 121.1 cm- 1. Calculate and plot the electronic contribution to the molar heat capacity of the molecule up to 500K
Electronic partition function(qe) is given by:
qe=gie-βEi
For NO , degeneracy , gi=2 ,β=1/kT , T=500K , Boltzmann constant ,k= 0.695cm-1/K
Transition in NO is from 2 Π1/2 -----> 2Π3/2
E1/2= 0 , E3/2 = 121.1cm-1
qe = 2 + 2 e-121.1/500*0.695 =2 + 2* 0.71 = 3.4
The NO molecule has a double degenerate electronic ground state and a double degenerate excited s...
The NO molecule has a doubly degenerate excited electronic level 121.1cm-1 above the double degenerate electronic ground term. (a) Calculate the electronic partition function of NO at T=0K, T=298K and T=1000K. (b) Evaluate the populations of ground and excited states and (c) the mean electronic energy at 298K.
Problem 2. A certain atom has a threefold degenerate ground level, a non-degenerate electronically excited level at 3500 cm, and a threefold degenerate level at 4700 cm-?. Calculate the partition function of these electronic states at 1900 K.
please answer
3.) The lowest two electronic energy levels of the molecule NO are two-fold degenerate and occur at 0 cm1 and 121.1 cm respectively. Determine the probability of occupying one of the higher energy states at 100, 500, and 2000 K
4. A certain molecule can exist in either a non-degenerate singlet state or a triplet state (with degeneracy 3). The energy of the triplet exceeds that of the singlet by E. Assuming that the molecules are distinguishable (localized) and independent, (a) obtain the expression for the molecular partition function. (b) Find expressions in terms of e for the molar energy, molar heat capacity, and molar entropy of such molecules and calculate their values at T = E/k.
Quantum Chemistry
3. What are the electronic terms of the ground state, first excited state, and second excited of the F2 molecule? Draw the molecular orbital for each state and explain the reasoning behind naming each term. You should consult the NIST Chemistry WebBook at http://webbook.nist.gov/chemistry
Section IV 13. Explain what happens to the molecular partition function () in the limits of Tinfinity and T→0 for a system that has a five-fold degenerate ground state, a nondegenerate first excited state, and a three-fold degenerate second excited state. There are no other states in this system. (5 pts)
Section IV 13. Explain what happens to the molecular partition function () in the limits of Tinfinity and T→0 for a system that has a five-fold degenerate ground state,...
Molecules in excited electronic states can return to the ground electronic state by emitting a photon through the processes of fluorescence and phosphorescence. Which of these processes is faster? fluorescence phosphorescence they occur at the same rate more information is required to answer this question
1/ What are the ground and first excited electronic states for [TiCl4 ]- ? 2/ Is the pure electronic (d to d) transition from the ground to the first excited electronic state spin and or orbitally allowed as an electric dipole transition ?
2. The frequencies of the first few vibronic transitions to an excited electronic state of PN are: -1 Vobs/Cm Vibronic transition 39699.10 40786.80 41858.90 Use these data to calculate v, and v, for the excited electronic state of PN
2. The frequencies of the first few vibronic transitions to an excited electronic state of PN are: -1 Vobs/Cm Vibronic transition 39699.10 40786.80 41858.90 Use these data to calculate v, and v, for the excited electronic state of PN
A certain atom has a doubly degenerate ground level pair and an upper level of four degenerate states at 450 cm^-1 above the ground level. In an atomic beam study of the atoms it was observed that 30 per cent of the atoms were in the upper level, and the translational temperature of the beam was 300 K. Are the electronic states of the atoms in thermal equilibrium with the translational states?