Here's why:
* Sulfur (S) has 6 valence electrons and needs 2 more to achieve a stable octet.
* Fluorine (F) has 7 valence electrons and needs 1 more to achieve a stable octet.
In SF6, sulfur shares one electron with each of the six fluorine atoms. This forms six individual covalent bonds, resulting in a stable molecule where sulfur and fluorine both achieve a full octet of electrons.
