Navigation


VSEPR

acronym noun
stands for Valence Shell Electron Repulsion Theory, the theory that describes how electrons will distribute themselves, which enables prediction of electronic and molecular geometry
 
This term describes a theory fairly basic to chemistry, so while it is a scientific term and can be used by academics, it is also often used by general chemistry students in college or even in high school.. It could be classified as academic chemistry slang. It is pronounced as “vesper” even though the letters are not in the correct order. It also it often used to include Electron Domain theory, even though that was a more advanced and updated theory. A more official way to pronounce VSEPR would be as an acronym, since this does not have the sound inversion of the S and the E. In the most formal setting, it would not be used as a clipping though, and would be referred to as VSEPR theory. However, VSEPR theory is not the most current, so it is probably out of date and therefore decreasing in usage in research and published papers.
Etymology : the initials of VSEPR come from Valence Shell Electron Repulsion Theory, which was drawn out in 1939 and 1940 in Japan and England, and later refined. Pronouncing each letter is cumbersome, but saying it as a word while staying true to the spelling is very difficult, as “vs” is not a common start to a word, so VSEPR started being pronounced as vesper, which is much easier to pronounce. The “theory” part of the phrase also got clipped out, because while it would be necessary to contextualize the phrase for someone not very familiar with it, but is unnecessary in a chemistry setting.
Source : In chemistry class, October 2019: “what is the geometry of this molecule according to VSEPR?”
Last modified: 10 December 2019


Navigation

# $ & ( + - 0 1 2 3 4 5 6 7 8 9 @
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z [ a ab c e f g u v




Options