Here's why:
* Covalent bond: A bond formed by the sharing of electron pairs between atoms.
* Nonpolar: Describes a molecule or bond where there is no separation of charge (no positive or negative poles).
In a nonpolar covalent bond, the electrons are shared equally because the atoms involved have similar electronegativities. Electronegativity is the ability of an atom to attract electrons towards itself in a chemical bond. When atoms have similar electronegativities, they pull on the shared electrons with equal force, resulting in an even distribution of electron density.
Examples of nonpolar covalent bonds:
* H-H (hydrogen gas)
* Cl-Cl (chlorine gas)
* O=O (oxygen gas)
* C-H (bonds in methane, CH4)
