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An electron donating group (EDG) or electron releasing group (ERG, Z in structural formulas) is an atom or functional group that donates some of its electron density into a conjugated π system via resonance (mesomerism) or inductive effects (or induction)—called +M or +I effects, respectively—thus making the π system more nucleophilic.
An electron-withdrawing group (EWG) is a group or atom that has the ability to draw electron density toward itself and away from other adjacent atoms. [1] This electron density transfer is often achieved by resonance or inductive effects.
An electric effect influences the structure, reactivity, or properties of a molecule but is neither a traditional bond nor a steric effect. [1] In organic chemistry, the term stereoelectronic effect is also used to emphasize the relation between the electronic structure and the geometry (stereochemistry) of a molecule.
Download QR code; Print/export Download as PDF; Printable version; ... move to sidebar hide. EDG may refer to: Science and medicine Electron donating group, a ...
You may be familiar with the Environmental Working Group (EWG) because they release a list of the most pesticide-filled produce every year called The Dirty Dozen. They also establish the produce ...
EWG may refer to: Eastern Washington Gateway Railroad, an American railroad; East-West Gateway Council of Governments, a planning organization in Greater St. Louis, United States; Election Working Group, a Bangladeshi civic organization; Electron withdrawing group; Energy Watch Group, an international energy think tank; English Whisky Guild, an ...
1080p (1920 × 1080 progressively displayed pixels; also known as Full HD or FHD, and BT.709) is a set of HDTV high-definition video modes characterized by 1,920 pixels displayed across the screen horizontally and 1,080 pixels down the screen vertically; [1] the p stands for progressive scan, i.e. non-interlaced.
Current logo for 1080p displays Logo for 720p televisions and set-top boxes. HD ready [4] and HD ready 1080p logos [5] [6] are assigned to displays (including integrated television sets, computer monitors and projectors) which have certain capabilities to process and display high-definition source video signal, outlined in a table below.