Respuesta :

transitionstate
As we know the electronegativity difference between two atoms in ionic compounds is greater than 1.7. So, greater the difference in electronegativity above 1.7 greater will be the ionic character and vice versa.

For Na and Cl;

                                    E.N of Chlorine   =  3.16
 
                                    E.N of Sodium    =  0.93
                                                                 ------------
                                    Difference               2.23

For K and Cl;

                                    E.N of Chlorine       =  3.16
 
                                    E.N of Potassium    =  0.82
                                                                     ------------
                                    Difference                    2.34

For O and Cl;

                                    E.N of Oxygen     =  3.44
 
                                    E.N of Chlorine    =  3.16
                                                                  ------------
                                    Difference                0.28

For Mg and Cl;

                                    E.N of Chlorine         =  3.16
 
                                    E.N of Magnesium    =  0.93
                                                                       ------------
                                    Difference                     1.31

Result:
           As calculated above,the least electronegativity difference is found between Oxygen and Chlorine which is less than 1.7. Hence, it is not ionic compound or it has least Ionic character.

The pair of O and Cl elements forms a bond with the least ionic character.

The ionic character of the bond depends on the electronegativity difference. The bonds having an electronegativity difference of greater than 1.7 have more ionic character.

(A) In bond between Na and Cl, the electronegativity difference =

Electronegativity of Cl - electronegativity of Na

= 3.16 - 0.93

= 2.23

(B) In bond between K and Cl

= electronegativity of Cl - electronegativity of K

= 3.16 - 0.82

= 2.34

(C) In bond between O and Cl:

= electronegativity of O - electronegativity of Cl

= 3.44 - 3.16

= 0.17

(D) In bond between Mg and Cl:

= electronegativity of Cl - electronegativity of Mg

= 3.16 - 1.31

= 1.85

Since the bond between O and Cl has the least electronegativity difference, thus have the least ionic character.

For more information about ionic character, refer the link:

https://brainly.com/question/2165883?referrer=searchResults

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