| Problems Provider: openstax cnx Language: English |
| 6.4 Electronic Structure of Atoms (Electron Configurations) Provider: openstax cnx Language: English |
| 3.4 Electronic Structure of Atoms (Electron Configurations) Provider: openstax cnx Language: English |
| Exercises Provider: openstax cnx Language: English |
| Exercises Provider: openstax cnx Language: English |
| 30.5 Applications of Atomic Excitations and De-Excitations Provider: openstax cnx Language: English |
| 30.5 Applications of Atomic Excitations and De-Excitations Provider: openstax cnx Language: English |
| Conceptual Questions Provider: openstax cnx Language: English |
| Chemistry: Atoms First - OpenStax Provider: ecampusontario open library Language: English |
| Premio AITeM - Promozione LASER Provider: university of bologna digital library Language: Italian |