Atoms of which pair of elements will form covalent bonds in a compound? A. I and F
B. Be and CI
C. Na and Al
D. Ag and Ca

A. I and F

Explanation:

The two element  pair that will form covalent bonds in a compound are I and F.

A covalent bond is a bond type formed between two atoms of similar electronegativity difference. In fact, the electronegativity difference between the two atoms must be very small for covalency for occur.

Covalent bonds involves sharing of the valence electrons between two or more atoms to attain stability.

Metals are electropositive will not readily form covalent bonds.

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.