Question

An element A combines with element B the electrons are transferred from the atom A to atom B.
a) what is the nature of bond between A and B?
b) what are the to main properties expected from compound AB ?
c) what happen if this compound is dissolved in water

Answer 1

Answer and Explanation:

$\blacksquare$ Bonds that are formed by the transfer of electrons are ionic bonds

$\blacksquare$ Ionic bonds are formed due to attraction between oppositely charged ions (cation and anion)

$\blacksquare$ Main properties of ionic bond are :

• High melting and boiling point due to strong interatomic forces of attraction which require, high amounts of energy to break
• Compounds with ionic bonds are hard but brittle
• They conduct electricity in molten or aqueous solution
• These compounds form definite crystal structures

$\blacksquare$ These compounds when dissolved in water conduct electricity due to the formation of ions

These so-formed ions are very mobile or free to move and hence conduct electrcity

$\blacksquare$ These compounds are also soluble in water due to their polarity that is difference in their charges