Cesium metal is frequently used in photoelectric cells because the amount of energy necessary to eject electrons from a cesium surface is relatively small-only 206.5 kJ/mol. Part A What wavelength of light (in nanometers) does this correspond to?

Wavelength of light in (nm) = 579 nm

Explanation:

At first you find out the amount of energy needed to just eject one electron. This is given by

this energy is given in question in kj/mole. This is the work function of cesium for each electron is equal to the planc'k  einstein equation.

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).