Chapter 8.5, Problem 72SSC

Interpretation Introduction

Interpretation:

Using electro negativity difference, bond types needs to be categorized.

Concept introduction:

Power of an atom to attract electrons in a bond is electro negativity. Electro negativity is directly proportional to ionic character of the bond.

Answer to Problem 72SSC

$\text{ΔEN}$ > 2.0 bond is ionic, $\text{ΔEN}$< 0.5 bond is non polar covalent, $\text{ΔEN}$ = 0.5 to 1.6 bond is polar covalent.

Explanation of Solution

Bond is considered as ionic if electro negativity difference $\left(\text{ΔEN}\right)$ is greater than 2.0, in non polar covalent bond electro negativity difference $\left(\text{ΔEN}\right)$ is less than 0.5 and if $\text{ΔEN}$ value is between 0.5 and 1.6 bond, it is polar covalent.

Conclusion

Electro negativity difference determines the bond type of the molecule. It is described as $\text{ΔEN}$.