Determining the color of salt when it is thrown into a flame.

The lowest lying excited state of sodium is 2.104 eV above the ground state. Given that Planck's constant is 4.135x10 (to the negative 15 pwr.) eV/Hz, what color of light do you expect sodium atoms to give off? Table salt is the crystal sodium-chloride NaCl. If you have a gas burner in your kitchen, take some salt and throw it onto the flame. The flame will excite the sodium atoms to this excited state, and they will then fall back down to the ground state giving off a spontaneous emission photon. What color do you see form the salt in the flame? Does it agree with your prediction?

Bainbridge Mass Spectrometer

This problem has to do with the fact that one of Dalton's original Atomic Theory postulates was not true. 1) One gram equivalent weight of Lithium is 6.941 grams, according to chemical reaction analysis. What does this statement mean? If the valence of Lithium is known to be +1, what is the gram atomic weight of Lithium? So what is the "atomic weight" of Lithium? Explain what this unitless number means, according to Dalton's definition of atomic weight. 2) A Lithium salt is vaporized in a Bainbridge Mass Spectrometer ion source section. The beam of Lithium ions is collimated and directed toward the "velocity selector." The Electric Field Strength is 1000.0 Volts/m and the Magnetic ... click for more

Understanding the photoelectric effect and a work function.

Describe with an example what the photoelectric effect in physics is as well as a work function?

Atomic Physics

If your body is emitting infrared radiation of wavelength 9.4 X 10(exponent negative 6)m, what is the energy of the released photons?

Atomic Physics

In a certain nuclear reaction, a gamma ray of energy 0.511 million electronvolts is produced. Compute the frequency of such a photon.