Chemistry 1301A/B Study Guide - Midterm Guide: Friedrich Paschen, Hydrogen Spectral Series, Louis De Broglie

• School: Western University
• Department: Chemistry
• Course: Chemistry 1301A/B
• Professor: Christina Booker

Document Summary

Balmer- discovered that h2 molecules emit light when place in a tube and excited with high voltage; known today as the balmer series. Theodore lyman- discovered that not only does h2 emit visible light but also ultraviolet; known as the lyman series. Friedrich paschen- discovered that h2 also emitted infrared light; known as the paschen series. Johannes rydberg put all this together and created an equation to predict the wavelength of h2- 1/lambda= rh (1/n2 1/m2) where n>1, m>n. Bohr proposed that the electron in the h atom orbited around the nucleus and it emitted energy when it went from one energy state to another. Bohr"s model did not explain how an electron stays in the lowest energy orbital without falling into the nucleus. He didn"t explain why only certain orbits are allowed. He didn"t explain the splitting of lines when the h emission spectrum was enlarged. His model also did not work for atoms with more than one electron.