Achieving an octet of valence electrons
Two fluorine atoms are able to share an electron pair, which becomes a covalent bond. Notice that only the outer (valence level) electrons are involved, and that in each F atom, 6 valence electrons do not participate in bonding. These are 'lone pairs' of electrons.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"Ikatan_kovalen_pada_molekul_F2.jpg."
https://commons.wikimedia.org/wiki/File:Ikatan_kovalen_pada_molekul_F2.jpg
Wikimedia
CC BY-SA 3.0.
