A Dative covalent bond forms when the shared pair of electrons in the covalent bond come from only one of the bonding atoms. A dative covalent bond is also called co-ordinate bonding. Common examples you should be able to draw that contain dative covalent bond (e.g. NH4+ , H3O+ , NH3BF3 ) The direction of the arrow goes from the atom that is providing the lone pair to the atom that is deficient Dative Covalent bonding The dative covalent bond acts like an ordinary covalent bond when thinking about shape so in NH4+ the shape is tetrahedral
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3.1.3.2 Nature of covalent and dative covalent bonds
A co-ordinate (dative covalent) bond contains a shared pair of electrons with both electrons supplied by one atom.
• a co-ordinate bond using an arrow.
1.3 Bonding Page 1
Oxford Textbook Pages : 49
CGP Revision Guide Pages : 27