Question

Similar to the Photoelectric Effect, the Ionization Energy of an atom is the energy it takes to remove an electron from an atom. The energy it takes to remove the first election is called the first ionization energy. The energy it takes to remove the second electron is called the second ionization energy. The energy needed to remove each subsequent electron is named in the same way. The first ionization energy of a sodium atom is 0.830 aJ. What is the frequency and wavelength, in nanometers, of photons capable of just ionizing sodium atoms? Values for constants can be found here.

Answer 1

use plancks equation \(E_{photon}=\dfrac{h*c}{\lambda}=h*\nu\)

you have to use the same units, 1 attojoule (aJ)= \(1.0*10^{-18}J\)