Definition of coordinate bond with examples

Jun 12, 2023, 16:45 IST

Coordinate Covalent Bond or Dative Bond

Lewis proposed that a different type of covalent bond can be formed when both the electrons for sharing between the atoms are contributed by one atom only. This type of bond is known as coordinate covalent bond or dative bond.

A coordinate covalent bond is established between two atoms one of which has a complete octet and at the same time posses at least one pair of unshared electrons while the other is short of two electrons. The former atom contributes one such pair of electrons for mutual sharing between the two atoms as a result of which the second atom also completes its octet and acquires a stable noble gas configuration. The atom, which contributes the pair of electrons, is known as the donar and the atom, which accepts these electrons, is called the acceptor.

 

Examples of Coordinate Covalent Bond

 

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