A metallic sample is known to be barium, cesium, lithium, or silver The electron binding energies for these metals are listed in the following table One way to identify the element might be through a photoelectric effect experiment The experiment was performed three times, each time using a differe...

A metallic sample is known to be barium, cesium, lithium, or silver. The electron binding energies for

Question:

A metallic sample is known to be barium, cesium, lithium, or silver. The electron binding energies for these metals are listed in the following table:

Metal Barium Cesium Lithium Silver Electron Binding Energy (J) 4.30 10-19 3.11 10-1 3.94 x 10-19 7.59 10-19

One way to identify the element might be through a photoelectric effect experiment. The experiment was performed three times, each time using a different laser as the light source. The results are summarized below. (The kinetic energy of the ejected photoelectrons was not measured.)

Laser Wavelength 532 nm 488 nm 308 nm Photoelectrons Seen? No Yes Yes