What types of atoms typically form covalent bonds? A. Metals with nonmetals, because their difference in electronegativity is above 1.7.

B. Metals with nonmetals, because their difference in electronegativity is below 1.7.

C. Nonmetals with nonmetals, because their difference in electronegativity is above 1.7.

D. Nonmetals with nonmetals, because their difference in electronegativity is below 1.7.

With nonmetals because their difference in electronegativity is below 1.7

Explanation:

Covalent bonds form between non-metals because their electronegativity difference is below 1.7. An electronegativity difference of this magnitude shows that the combining atoms would equally have a similar affinity for valence electrons when interatomic bonds are forming.
A covalent bond involves the sharing of valence electrons in their outer energy shells in order to mimic the noble gases.
Electronegativity is a measure of an atom to attract valence electrons in chemical bonds.
Non-metals generally have very high electronegativity.
Since the two atoms have high electronegativity, it becomes difficult for an atom to donate electrons from bonding as seen in ionic bonding.
In covalent bonding, the two atoms donates the electrons to be shared.
Example is HCl.