General Chemistry
OF6 does not form, but SF6 does because oxygen cannot exhibit an expanded octet, while sulfur can.
OF6 does not form, but SF6 does because oxygen has a much larger atomic radius than sulfur.
OF6 does not form, but SF6 does because oxygen is not electronegative enough to accommodate the bonds formed.
OF6 does not form, but SF6 does because fluorine can only form bonds with larger atoms like sulfur.
