Question

Q.1: Define chemical bond and dative covalent bond ? Q.2:Define a lone pair and coordinate covalent bond ?

Answer 1

Answer:

Chemical bond:

A chemical bond is a lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds.

Dative covalent bond:A co-ordinate bond (also called a dative covalent bond) is a covalent bond (a shared pair of electrons) in which both electrons come from the same atom.

Lone pair:

Lone pair (nonbonded pair, nonbonded electron pair): A valence shell electron pair associated with one atom, and not part of a covalent bond. ... The oxygen atom of water has two lone pairs.

Coordinate covalent bond:

A coordinate bond (also called a dative covalent bond) is a covalent bond (a shared pair of electrons) in which both electrons come from the same atom. ... In the formation of a simple covalent bond, each atom supplies one electron to the bond - but that does not have to be the case.