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Expressing resonance when drawing Lewis structures may be done either by drawing each of the possible resonance forms and placing double-headed arrows between them or by using dashed lines to represent the partial bonds (although the latter is a good representation of the resonance hybrid which is not, formally speaking, a Lewis structure).
Media related to Gilbert Newton Lewis at Wikimedia Commons; Key Participants: G. N. Lewis - Linus Pauling and the Nature of the Chemical Bond: A Documentary History; Eric Scerri, The Periodic Table, Its Story and Its Significance, Oxford University Press, 2007, see chapter 8 especially; National Academy of Sciences Biographical Memoir
Contributing structures of the carbonate ion. In chemistry, resonance, also called mesomerism, is a way of describing bonding in certain molecules or polyatomic ions by the combination of several contributing structures (or forms, [1] also variously known as resonance structures or canonical structures) into a resonance hybrid (or hybrid structure) in valence bond theory.
The skeletal formula of the antidepressant drug escitalopram, featuring skeletal representations of heteroatoms, a triple bond, phenyl groups and stereochemistry. The skeletal formula, line-angle formula, bond-line formula or shorthand formula of an organic compound is a type of molecular structural formula that serves as a shorthand representation of a molecule's bonding and some details of ...
The split-pin lewis is similar to the chain-linked lewis in that it uses a scissor-like action to produce friction against the inside of the lewis hole. The two legs, semicircular in section, lie side-by-side, and fit inside a hole drilled in the stone. This type of lewis seating is the simplest to prepare, requiring a single drilled hole.
The Greek key motif consists of four adjacent antiparallel strands and their linking loops. It consists of three antiparallel strands connected by hairpins, while the fourth is adjacent to the first and linked to the third by a longer loop. This type of structure forms easily during the protein folding process.
The Game of Logic is a book, published in 1886, written by the English mathematician Charles Lutwidge Dodgson (1832–1898), better known under his literary pseudonym Lewis Carroll. In addition to his well-known children's literature, Dodgson/Carroll was an academic mathematician who worked in mathematical logic .
The Lives of a Cell: Notes of a Biology Watcher (1974) is collection of 29 essays written by Lewis Thomas for The New England Journal of Medicine between 1971 and 1973. . Throughout his essays, Thomas touches on subjects as various as biology, anthropology, medicine, music (showing a particular affinity for Bach), etymology, mass communication, and com