| 释义 | 
		Definition of single bond in English: single bondnoun A chemical bond in which one pair of electrons is shared between two atoms.  Example sentencesExamples -  In the nitro group, the central nitrogen atom is involved in both a double bond and a single bond.
 -  A carbon atom with two single bonds and one double bond carries a valence of four.
 -  If a single bond is made by sharing one electron from each atom, each oxygen then has seven electrons, one short of an octet.
 -  Like other hydrocarbons with double bonds, addition reactions can occur to change the double bonds to single bonds.
 -  The porphyrin ring is unsaturated, having alternating carbon-carbon single bonds and double bonds throughout the ring.
 
    Definition of single bond in US English: single bondnoun A chemical bond in which one pair of electrons is shared between two atoms.  Example sentencesExamples -  A carbon atom with two single bonds and one double bond carries a valence of four.
 -  If a single bond is made by sharing one electron from each atom, each oxygen then has seven electrons, one short of an octet.
 -  Like other hydrocarbons with double bonds, addition reactions can occur to change the double bonds to single bonds.
 -  The porphyrin ring is unsaturated, having alternating carbon-carbon single bonds and double bonds throughout the ring.
 -  In the nitro group, the central nitrogen atom is involved in both a double bond and a single bond.
 
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