double bond meaning

  "double bond" in a sentence
Noun: double bond  dúbul bónd
  1. A covalent bond in which two pairs of electrons are shared between two atoms

Derived forms: double bonds

Type of: covalent bond

Encyclopedia: Double bond


[Medicine]
n : a chemical bond in which two pairs of electrons are shared by two atoms in a molecule and which is usu. represented in chemical formulas by two lines (as in the formula for ethylene H2C]CH2) —compare TRIPLE BOND —see UNSATURATED b

Examples

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  1. compounds containing two double bonds are called dienes.
  2. one atom of oxygen is linked to the nitrogen atom by a double bond.
  3. with exocylic double bonds the effect of strain is in the opposite direction.
  4. in the ethyne molecule, a double bond links together the two carbon atoms.
  5. the triple bond does not usually react so vigorously at a carbon-carbon double bond.

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