Q13 of 59 Page 395

The Kα X-ray of argon has a wavelength of 0.36 nm. The minimum energy needed to ionize an argon atom is 16 eV. Find the energy needed to knock out an electron from the K shell of an argon atom

Given:


Wavelength of Kβ X-ray of argon= 0.36 nm


Energy required to ionize an argon atom= 16eV


Energy of Kβ x-ray of argon E is given by,



E= 3450 eV


Energy needed to knock out an electron from K shell


Ek=3450+16 eV


Ek=3.47 KeV (approx.)


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