Question

Which of the bonds formed between each pair of atoms, is a polar covalent bond?

A.Na and Cl

B. Cl and C

C. O and S

D. H and B

E. C and H

F. B and N

Answer 1

A nonpolar covalent bond,

•Occurs between nonmetals

•Is an equal or almost equal sharing of electrons

•Has almost no electronegativity difference (0.0 to 0.4)

A polar covalent bond,

•Occurs between nonmetals atoms

•Is an unequal sharing of electrons

•Has a moderate electronegativity difference (0.5 to 1.7)

Answer for the above question against polar covalent bond in Yes and No is as follows:

A.Na and Cl No

B. Cl and C No Yes

C. O and S Yes

D. H and B No

E. C and H No

F. B and N No