Which substance is correctly paired with its type of bonding?

(1) NaBr-nonpolar covalent (2) HCl-nonpolar covalent (3) NH3-polar covalent

(4) Br2-polar covalent

1) NaBr is a ionic bond, because most sodium compounds are ionic. Incorrect answer.

2) HCl is polar, not nonpolar. Incorrect answer.

3) NH3 is a polar covalnet bond because the atoms are not equally shared. So, this answer is correct!

Final answer: (3) NH3-polar covalent