Answer:
Lewis structure of [tex]SO_{3}[/tex] has been given below and formal charge of S is +2
Explanation:
- Lewis structure is drawn by placing least electronegative atom (except H) as central atom. Here S is least electronegative atom. Hence S is the central atom.
- Total valence electrons are calculated by adding valence electrons of all the constituting atoms. These electrons are used to make Lewis structure by fulfilling octet of all atoms and duet of hydrogen atoms.
- Total valence electron in [tex]SO_{3}[/tex] is 24. Octet of S and two oxygen atoms should be fulfilled by using 18 electrons to draw Lewis structure.
- Formal charge on an atom = (no. of valence electrons)-(no. of covalent bonds)-(no. of electrons in lone pair/2)
- Lewis structure is given below
