Chapter Questions
How could you use a spectrum produced from sunlight reflected off the atmosphere of Venus to determine something about Venus's atmospheric composition?
If you were to look at the spectrum of the gas flame of a stove or the blue part of a Bunsen burner flame, what sort of spectrum would you expect to see: absorption, emission, or continuous? Why?
In the formula for hydrogen's energy levels, find the energy difference between levels $n=1$ and $n=2,$ and determine the wavelength of a photon with this energy. What part of the electromagnetic spectrum is this?
Using the formula for hydrogen's energy levels, calculate the energy of a photon emitted when hydrogen goes from level 143 to level 142 (a transition that has been observed by astronomers). What is the wavelength of this spectral line? What part of the electromagnet spectrum is this?
Based on the formula for hydrogen's energy levels, what is the energy of an electron if $n$ goes to infinity? Explain. Would a beam of photons with energy $=1.1 \times 10^{-18}$ joules affect a hydrogen atom that is in its ground state? What if it was in the $n=2$ state?
From the data in Table 24.1 , what wavelength photon can ionize helium? What wavelength can ionize uranium?