Draw the Lewis structure

Question

Draw the Lewis structure for SO2 in which all atoms obey the octect rule. Show formal charges. Do not consider ringed structures

Answer 1

Valence electrons:

6 from S

6 from each O x 2 = 12

Total valence electons =18

S is the center atom and has 2 O atoms attached. The S has 1 lone pair. One of the O atoms is double bonded to the S atom and this O atom has 2 lone pairs. The other O atom is singly bonded to the S atom, and it has 3 lone pairs. All atoms obey the octet rule.

.. .. ..

: O = S - O :

..

or you can draw the same thing with the double bond O on the other O so you have 2 resonance structures.

FORMAL CHARGES

zero on the O that is double bonded to S

+1 on the S

-1 on the O that is single bonded to S