Chemistry Practice Problems Chemical Bonds Practice Problems Solution: Based on electronegativities, which of the followi...

Solution: Based on electronegativities, which of the following would you expect to be most ionic?A. CF4B. CaF2C. CH4D. N2E. CO2

Problem

Based on electronegativities, which of the following would you expect to be most ionic?

A. CF4

B. CaF2

C. CH4

D. N2

E. CO2

Solution

Establish how to find the electronegative difference and determine which among the compounds is most ionic


Recall that dipole moment refers to the electronegativity difference in a bond/molecule. This means the molecule with the largest dipole moment has the largest electronegativity difference.



Recall that bonds can be classified acc. to their EN difference as:

   __________________________________________________

Electronegativity Difference        

              (ΔEN)                                     Bond Classification
   __________________________________________________

Zero (0.0)                                          Pure Covalent
Small (0.1 – 0.4)                                Nonpolar Covalent
Intermediate (0.4  – 1.7)                    Polar Covalent
Large (Greater than 1.7)                  Ionic               


By calculating the electronegative difference, we can determine which bond/compound has the most ionic. The higher the EN difference, the more ionic it is

Solution BlurView Complete Written Solution