Differentiate between covalent, metallic and ionic bonding!?

Answer 1

Covalent bonding is where two atoms share an electron in order to create a chemical bond.

Ionic bonding is where one atom loses one or more electrons and its counterpart gains one or more electrons. The electrical charge on each of these two ions then creates an an attractive force between the oppositely charged ions.

Metallic bonding occurs in metals where there is no net gain or loss of elections or sharing between two atoms. Here electrons move freely between the atoms as a "sea".

Answer 2

Covalent bonding occurs in molecular(non-metal) compounds only and it is sharing electrons between two elements. Ex. NO - nitrogen monoxide. They share the electrons.
Ionic bonding occurs in ionic(metal and non-metal) compounds only and it is the taking of electrons. Elements don't share the electrons, they take or give them away. Ex. NaCl - sodium chloride. Sodium gives an electron away to chlorine. This is shown through their charges. Sodium has a 1+ charge indicating that it can give away one electron and chlorine has a 7- charge showing that it can accept one electron.
Metallic bonding is "the electrostatic attraction between the postively charged ions and negatively charged electrons." It looks like a "sea of electrons". The website I got this from is below. (only for metallic bonding).
I hope this helps you.