1. The problem statement, all variables and given/known data Consider an X-ray tube that uses platinum (Z=78) as its target. Use the Bohr model to estimate the minimum kinetic energy electrons must have in order for Ka X-rays to just appear in the X-ray spectrum of the tube. 2. Relevant equations Ek=-13.6ev * (Z-1)² / 1² EL=-13.6ev * (Z-1)² / 2² E=EK-EL 3. The attempt at a solution Ek=-13.6ev * (Z-1)² / 1² Ek=-13.6ev * (78-1)² / 1² Ek=-80634.4ev EL=-13.6ev * (Z-1)² / 2² EL=-13.6ev * (Z-1)² / 2² EL=-20158.6ev E=EK-EL E=-80634.4ev - -20158.6ev E=100793 ev Did I do this correctly?