Question

`according to the electronegativity table, the value for carbon and nitrogen is 2.5 and 3.0, respectively. what type of bond would you expect to form between these two elements?
a.polar covalent
b.ionic
c.pure covalent
d.not enough enough information to answer
e.none of these statements are true.

Answer 1

The type of bond between two elements can be predicted by measuring the electronegativity difference between the two atoms. Based on this difference the type of bonds are classified as,
E.N difference between 0.0 to 0.3 = Non Polar bond
E.N difference between 0.4 to 1.0 = Moderate Polar Covalent Bond
E.N difference between 1.1 to 2.0 = Very Polar Covalent Bond
E.N difference greater than 2.0 = Ionic Bond
So,
(E.N of N) 3.04 - (E.N of C) 2.55 = 0.49
As the difference is between 0.4-1.0, So, the bond between C and N is Moderate Polar Covalent Bond (or Polar Covalent Bond).