Question

1. (a) What is the energy gap (ΔE) at which the population of the excited state...

1. (a) What is the energy gap (ΔE) at which the population of the excited state approaches the population of the ground state at room temperature, (b) what type(s) of transition and spectroscopy method(s) correspond(s) to this energy gap, and (c) explain the consequences of this phenomenon for such spectroscopic technique(s)

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
1. Which of the following describes the transition of an electron from an excited state to...
1. Which of the following describes the transition of an electron from an excited state to the ground state? a. An absorption of energy b. An emission of energy c. No change in energy 2. If the ground state of an electron in a hydrogen-like atom has an energy of -x eV, which of the following is the energy of one of the excited states? a. -x/9 eV b. -x/2 eV c. -x/3 eV d. -x/8 eV
Use the Boltzmann equation to calculate the excited state to ground state population ratio (to 1...
Use the Boltzmann equation to calculate the excited state to ground state population ratio (to 1 significant figure) for Cl2: N(ν=1)/N(ν=0) at room temperature (25°C). The wavenumber for the fundamental vibrational frequency of Cl2 is 550 cm-1. Assume that g1 ≈ g0
A. Consider a hydrogen atom with one electron and quantized energy levels. The lowest energy level...
A. Consider a hydrogen atom with one electron and quantized energy levels. The lowest energy level (n = 1) is the ground state, with energy -13.6 eV. There are four states corresponding to the next lowest energy (n = 2), each with energy-3.4 eV. For the questions below, consider one of these four states, called one of the first excited states. 2. Assume that this hydrogen atom is present in a gas at room temperature (T ~ 300 K, kBT...
1. a. A photon is absorbed by a hydrogen atom causing an electron to become excited...
1. a. A photon is absorbed by a hydrogen atom causing an electron to become excited (nf = 6) from the ground state electron configuration. What is the energy change of the electron associated with this transition? b. After some time in the excited state, the electron falls from the n = 6 state back to its ground state. What is the change in energy of the electron associated with this transition? c. When the electron returns from its excited...
A molecule has three degenerate excited vibrational states, each with excitation energy ? above the ground...
A molecule has three degenerate excited vibrational states, each with excitation energy ? above the ground state. a) At temperature T, what is the ratio between the number of molecules in (all of) these vibrational states and the number in the ground state? b) At very high T, what is this ratio? c) Assume you have N distinguishable molecules of this type. Use the free energy to compute entropy S/k of the system at temperature T d) Compute the number...
A hydrogen atom at rest is initially in an excited state corresponding to n = 5....
A hydrogen atom at rest is initially in an excited state corresponding to n = 5. a- Give the quantum numbers (l) and (m) which correspond to n = 5 b- What is the ionization energy of the atom in this state? c- What is the frequency of the photon emitted when it returns to its ground state n = 1? d- Estimate the momentum and the kinetic energy of the atom's recoil during the photon emission. mH= 1.007825? 1?...
1. A molecule has a ground state and two excited electronic energy levels all of which...
1. A molecule has a ground state and two excited electronic energy levels all of which are not degenerate. The energies of the three states are E = 0, E1 = 1x10^-20 J and E2 = 2x10^-20 J. Calculate the partition functions at 298 and 1000K. What fraction of the molecules is in each of the three states at these temperatures?
Silicon at 293 K has an energy gap Eg = 1.20 eV. (a) Calculate the probability...
Silicon at 293 K has an energy gap Eg = 1.20 eV. (a) Calculate the probability that an electron state is occupied at the bottom of the conduction band at a temperature of 293 K, i.e., at an energy 1.20 eV above the top of the valence band. (b) Doping silicon with aluminum adds acceptor levels in the gap, 0.067 eV above the top of the valence band of pure silicon, and changes the effective Fermi energy. See Fig. 41-...
The first excited vibrational energy level of ditomic chlorine (Cl2) is 558 cm−1 above the ground...
The first excited vibrational energy level of ditomic chlorine (Cl2) is 558 cm−1 above the ground state. Wavenumbers, the units in which vibrational frequencies are usually recorded, are effectively units of energy, with 1cm−1=1.986445×10−23J. If every vibrational energy level is equally spaced, and has a degeneracy of 1, sum over the lowest 4 vibrational levels to obtain a vibrational partition function for chlorine. A) Determine the average molar vibrational energy <Em.vib> for chlorine at 298 K. B) Determine the population...
Consider a Li++ ion as described by the Bohr model. (a) At some other time, the...
Consider a Li++ ion as described by the Bohr model. (a) At some other time, the electron in n=4 state. What possible wavelength of radiation emitted by this atom? Write the algebraic expression(s) and draw the diagram to illustrate the transitions. (b) What is the ground state energy of this system in eV? Write the expression and evaluate it. What value of the quantum number n does this correspond to? (c) Now assume the electron is in the n=1 state....