Electromagnetic radiation of wavelength is just sufficient to ionize the sodium atom. Calculate the ionization energy of sodium in .
Electromagnetic waves
Step 1: Given data
The wavelength of electromagnetic radiation is,
The energy of the electromagnetic can ionize the sodium atom. So ionization energy of sodium is equal to the energy of the electromagnetic wave.
Step 2: Calculating the ionization energy of the sodium atom
Now, the energy of the electromagnetic wave is
So, ionization energy per mole is
Therefore, the ionization energy of sodium