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- In chemical physics and physical chemistry, chemical affinity is the electronic property by which dissimilar chemical species are capable of forming chemical compounds. Chemical affinity can also refer to the tendency of an atom or compound to combine by chemical reaction with atoms or compounds of unlike composition.
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Chemists define electron affinity as the change in energy, measured in units of kJ/mole, experienced when an electron is added to a gaseous atom. This process creates a negative ion. This process differs from electronegativity, which we define as the ability of an atom to attract an electron toward itself.
Aug 28, 2023 · Definition of Electron Affinity. Electron affinity is a quantitative measurement of the energy change that occurs when an electron is added to a neutral gaseous atom. The more negative the electron affinity value, the higher the electron affinity and the more easily an electron is added to an atom. Electron affinity can be either positive or ...
Abstract. This historiographic paper traces the evolution of the concept of chemical affinity from its antique origins until the end of the twentieth century. It shows how this concept changed over time, which important problems in the chemical science it revealed, and how it contributed to the development of chemical thermodynamics and ...
Nov 14, 2019 · Abstract. According to Quílez (Found Chem, 2018, [ 1 ]) the idea of affinity as the disposition of two chemical species to react goes back to the work of the theologian and natural philosopher Albertus Magnus during the 13th century. Download chapter PDF.
- de Berg, C Kevin
- kdeberg@avondale.edu.au
- 2019
To recognize the inverse relationship of ionization energies and electron affinities. The electron affinity ( EA E A) of an element E E is defined as the energy change that occurs when an electron is added to a gaseous atom: E(g) +e− → E−(g) energy change=EA (2.8.1) (2.8.1) E ( g) + e − → E ( g) − energy change= E A.
Electron affinity is defined as the change in energy (in kJ/mole) of a neutral atom (in the gaseous phase) when an electron is added to the atom to form a negative ion. In other words, the neutral atom's likelihood of gaining an electron.
FAQs. What is Electron Affinity. The electron affinity is defined as the amount of energy released per mole when an electron is added to a neutral atom. It is the opposite of ionization energy [1-4]. How to Find Electron Affinity. The electron affinity is generally challenging to determine.
