What best defines covalent bonds?

Answer 1

A covalent bond is when two atoms share their electrons to form a single bond. For example if two atoms that both have only one electron on them, a 1e, then those two 1e's come togother. Let's say we have atom "X". It would look like this:

X. + X. -> X:X

Answer 2

Covalent bonds are formed when two atoms share one or more pairs of electrons to achieve a more stable electron configuration. These bonds are typically found in nonmetal elements and involve the sharing of valence electrons to complete the octet rule. Covalent bonds are strong and are responsible for holding together atoms in molecules.