Chemistry
Quantum Mechanical Model
Bohr’s theory was a start but it only explained the hydrogen atom (one electron as a particle orbiting around a nucleus). The Quantum-Mechanical (QM) model,…
Electromagnetic Radiation
Chemistry
Interpreting Electronic Spectra
The simplest spectra to study are those of H, as it only has one electron. These contain sets of lines which can be related to…
Chemistry
Moving Electrons
Moving an electron between a lower and higher energy level can only be achieved if it absorbs energy of a particular amount; this could be…
Chemistry
Bohr Model
Emission and absorption spectra are evidence that the electrons within an atom have quantised energies i.e. an electron cannot possess a continuous range of values…
Chemistry
Absorption Spectra
An element can also absorb light at specific wavelengths. An absorption spectrum can be obtained by passing a continuous radiation spectrum (white light) through a…