University:
Boston University
Course:
CAS PY 105 | Physics 1
Academic year:

2024
Views:

76

Pages:

1
Author:

sportyqt20079yls

Example ionization problems 1. What is the wavelength of light needed to ionize an H atom in the Answer: 365 nm. 2 energy level? 2 energy level is 365 nm. What will be the kinetic 2. The ionization wavelength of H atom in the energy of the electron ionized by 295 nm light? By 245 nm light? Answer: 1.29 10 J; 2.67 10 J. 2 energy level is 365 nm. Will light of this 3. The ionization wavelength of H atom in the wavelength ionize He in the 1 level? Answer: No, since the ionization wavelength is 22.8 nm. 4. Photons of energy Ry are able to ionize H in its 1 energy level. Are photons of this energy are able to ionize He in its 2 energy level? Answer: Yes, since the ionization energy of He in its 2 energy level is 0 Ry 2 /2 Ry. 1 energy level. Are photons of this energy are 5. Photons of energy Ry are able to ionize H in its 2 able to ionize Li in its 2 energy level? Answer: No, since the ionization energy of Li2 in its 2 energy level is0 Ry 3 /2 2.25 Ry.