Please enable JavaScript.
Coggle requires JavaScript to display documents.
Arrangement of Electrons in the Atom 2 (Orbitals (Region in space where…
Arrangement of Electrons in the Atom 2
AAS
Light that emerges has certain wavelenghts missing i.e dark lines are observed in spectrum(AAS)
Emission spectrum consists of coloured lines against a dark background
Absorption spectrum consists of dark lines against a coloured background
Heisenburgs Uncertainty Principle
Impossible to measure both the velocity and position of the electron at the same time
Uses of AAS
Detecting the presence of certain elements in materials dissolved in water & measuring the concentrations of these elements using an instrument called an atomic absorption spectrometer
Used in forensic science to test for gunshot residue
Wave nature of the electron
Louis de Broglie-all moving particles have a wave like motion associated with them
Limitations
Heisenburgs Uncertainty Principle was in conflict with Bohrs theory i.e we can only refer to the probability of finding an electron in a region in space
Bohrs theory could not explain the splitting of certain lines in emission spectra and did not take into account the presence of sublevels
Orbitals
Region in space where there is a high probability of finding an electron
px py pz
Sublevel-subdivision of a main energy level and consists of one or more orbitals of the same energy
2p sublevel consists of 3 p orbitals of the same energy