How do covalent bonds share electrons?

Answer 1

A covalent bond is formed when the valence atomic orbitals on two atoms overlap optimally. Thus, they share their electrons well enough that they are attracted to each others' nuclei, and the covalent bond is made.

(This sharing isn't always even, and that is decided by the atom's electronegativity.)

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Answer 2

Mateo Aguilar

Covalent bonds are formed when atoms share electrons. Each atom gives one or more electrons to the bond, forming a shared electron pair. These shared electrons fill the space between the bonded atoms' nuclei, resulting in a stable arrangement. By filling the outer electron shell of each atom, the sharing of electrons enables each atom to achieve a more stable electron configuration, usually resembling that of a noble gas.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.