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HSAB is widely used in chemistry for explaining the stability of compounds, reaction mechanisms and pathways. It assigns the terms 'hard' or 'soft', and 'acid' or 'base' to chemical species . 'Hard' applies to species which are small, have high charge states (the charge criterion applies mainly to acids, to a lesser extent to bases), and are ...
In the theory of chemical reactivity, the Klopman–Salem equation describes the energetic change that occurs when two species approach each other in the course of a reaction and begin to interact, as their associated molecular orbitals begin to overlap with each other and atoms bearing partial charges begin to experience attractive or repulsive electrostatic forces.
Ralph Gottfrid Pearson (January 12, 1919 – October 12, 2022) was an American physical inorganic chemist best known for the development of the concept of hard and soft acids and bases (HSAB). He received his Ph.D. in physical chemistry in 1943 from Northwestern University , and taught chemistry at Northwestern faculty from 1946 until 1976 ...
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Before we explain this incorrectness, let us examine a little of the principles of HSABs: Pearson is the one who created the HSAB theory, based on the principle: Hard acids can react well with hard bases, amd soft acids with soft bases. The following is a table of common HSABs. Blnguyen (bananabucket) 03:53, 21 November 2006 (UTC)
HAL (short for Hyper Articles en Ligne) [2] is an open archive where authors can deposit scholarly documents from all academic fields.. Documents in HAL are uploaded either by one of the authors with the consent of the others or by an authorized person on their behalf. [3]
The Association française pour l'information scientifique or AFIS (English: French Association for Scientific Information) is an association regulated by the French law of 1901, founded under the leadership of Michel Rouzé in November 1968. [2]
The French Alternative Energies and Atomic Energy Commission, or CEA (French: Commissariat à l'énergie atomique et aux énergies alternatives), is a French public government-funded research organisation in the areas of energy, defense and security, information technologies and health technologies.