Fluorine has seven valence electrons and needs one more electron to achieve a stable octet.
Here's why:
* Valence electrons: These are the electrons in the outermost shell of an atom, which are involved in chemical bonding.
* Octet rule: Atoms tend to gain, lose, or share electrons to achieve a stable configuration of eight electrons in their outermost shell. This is known as the octet rule.
* Fluorine's configuration: Fluorine has 7 valence electrons. By gaining one more electron, it can complete its octet and become more stable.
Therefore, fluorine readily forms a single covalent bond with other atoms to achieve a stable octet configuration. This is why fluorine is highly reactive and forms strong bonds.
