Question

_____ bonds are formed when the electronegativity difference is 0.4 > 2.0. Give two examples:

Answer 1

Ionic Bond is formed when the electronegativity difference is 0.4 > 2.0. Electronegativity is a term that can be defined as a tendency of an atom to attract electron towards its own self.

Explanation:

Electronegativity is a term that can be defined as a tendency of an atom to attract electron towards its own self.

An  electronegativity of an atom is affected by

• The atomic number of the atom
• Secondly by the distance at which the valence electron are residing from the nucleus

1. In case the  electronegativity difference (which is denoted by  ΔEN) is less than 0.5  then the bond formed is known as Nonpolar covalent.

2. In case  the ΔEN is in between 0.5 and 1.6, the bond formed is referred to as the Polar covalent

3. In case  the ΔEN is more /greater  than 2.0, then the bond formed is referred to as Ionic Bond

2 Examples of Ionic bonds

• The formation of sodium fluoride, NaF, from a sodium atom and a fluorine atom is an example of Ionic bond formation.
• Another example is the formation of NaCl from  sodium (Na),which is  a metal, and chloride (Cl), which is a  nonmetal