In water, it behaves as a Lewis acid accepting the electron pair of a hydroxyl ion produced by the water autoprotolysis.
32.
EDTA, ethylenediaminetetraacetic acid, has four carboxyl groups and two amine groups that can act as electron pair donors, or Lewis bases.
33.
The nitrogen atom features a lone electron pair that can bind H + to form an ammonium ion R 3 NH +.
34.
Mingos'1984 paper on the polyhedral skeletal electron pair theory develops Wade's electron counting rules for predicting the molecular geometry of cluster compounds.
35.
Bhabha and Heitler explained the cosmic ray shower formation by the cascade production of gamma rays and positive and negative electron pairs.
36.
For example, the H 2 O molecule has four electron pairs in its valence shell : two lone pairs and two bond pairs.
37.
Because there are a lot of such electron pairs in a superconductor, these pairs overlap very strongly and form a highly collective condensate.
38.
The sigma bond between the ring and carboxyl group is then severed, the electron pair moving to the ring and delocalized through resonance structures.
39.
An electron pair from an oxygen on ADP attacks the phosphorus on butyryl-phosphate, breaking the bond between phosphorus and oxygen to create ATP and butyrate.
40.
The 1916 article by Lewis also introduced the concept of the electron pair in the covalent bond, the octet rule, and the now-called Lewis structure.
