Draw the Lewis structure for `SF_6`.

Explanation

Step 1: The number of valence electrons is `6+(6xx7)=48`.
Step 2: Since F can form only one bond while S can form more than one bond (as it is bonded to the most electronegative element F which helps in the excitation of its valence electrons into `3d` orbitals), the skeleton must be

Step 3: The number of valence electrons remaining to complete octets is `48-12=36`.
Step 4: The number of electrons needed to complete the octets of the F atoms is `6xx6=36`. Note that the central S atom has a total of 12 valence electrons around it in the skeleton structure.
Step 5: The complete Lewis structure will be obtained by placing three pairs of dots (electrons) around each F atom:

Step 6: The number of valence electrons in the Lewis structure, 48, equals the number of valence electrons counted in step 1.