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In chemistry, a zwitterion (/ ˈ t s v ɪ t ə ˌ r aɪ ə n / TSVIT-ə-ry-ən; from German Zwitter 'hermaphrodite'), also called an inner salt or dipolar ion, [1] is a molecule that contains an equal number of positively and negatively charged functional groups.
These molecular species are created by ionization of either zwitterions or diradicals; ultimately, a neutral molecule loses an electron. [2] Through experimental research distonic radicals have been found to be extremely stable gas phase ions [ 3 ] and can be separated into different classes depending on the inherent features of the charged ...
Ampholytes are zwitterions. [4] Molecules or ions that contain both acidic and basic functional groups. Amino acids H 2 N−RCH−CO 2 H hav both a basic group −NH 2 and an acidic group −COOH. Often such species exists as several structures in chemical equilibrium:
This endangered cetacean is not only the smallest porpoise species, but the most rare. Where there were once thousands of vaquitas swimming in the sea, today there may only be about 10 individuals ...
Today's NYT Connections puzzle for Wednesday, January 15, 2025The New York Times
Marine biologists have captured a rare sight of a giant pod of over 1,500 dolphins leaping and swimming off the California coast.. The “super pod” of Risso’s dolphins was spotted in Carmel ...
Forming an ionic bond, Li and F become Li + and F − ions. An ion (/ ˈ aɪ. ɒ n,-ən /) [1] is an atom or molecule with a net electrical charge. The charge of an electron is considered to be negative by convention and this charge is equal and opposite to the charge of a proton, which is considered to be positive by convention. The net charge ...
The isoionic point is the pH value at which a zwitterion molecule has an equal number of positive and negative charges and no adherent ionic species. It was first defined by S.P.L. Sørensen, Kaj Ulrik Linderstrøm-Lang and Ellen Lund in 1926 [1] and is mainly a term used in protein sciences.