What is Electrovalent bond give examples?
Answers
Answer:
For example, the bond between the sodium and chlorine atoms in sodium chloride (NaCl) is formed by the transfer of an electron from sodium to chlorine, creating Na + and Cl – ions. ... The electrostatic attraction between these ions provides the bonding in NaCl.
Explanation:
Electrovalent or Ionic Bond:->
An electrovalent or ionic bond is the type of chemical bond that is formed between two atoms by transfer of one or more electrons from the atom of an electropositive or metallic element to the atom of an electronegative or non - metallic element.
During the formation of an ionic bond, the total number of electrons lost by one or more atoms of an element is always equal to the total number of electrons gained by one or more atoms of the other element.
Conditions for formation of Electrovalent Bond:
[i] Both atoms should have high electonegativity.
[ii] Both atoms should have more difference in ionisation potential.
[iii] Both atoms should have low ionisation potential.
A metallic element whose one atom readily loses electrons to form a positively charged ion is an electropositive element.
Na – e- ———> Na+ (cation)
A non - metallic element whose atom readily accepts electrons to form a negatively charged ion is an electronegative element.
Cl + e- ———> Cl- (anion)
The cation and anion being oppositely charged attract each other and form a chemical bond. Since this chemical bond formation takes place due to the electrostatic force of attraction (Coulombic force) between a cation and an anion, therefore, it is called an electrovalent or ionic bond.