According to VSEPR that type of molecule would have the designation AX2E1. Where the central atom is designated as A, the two bonded species are X (X2), and the lone pair on the central atom is E1.
Examples of molecules like this are NO
2-, SO
2 (specific to your designation), and O
3.
They are Bent, the bond angle between the S and O is actually somewhat less than the predicted.theoretical 120
o. It is compressed to approximately 118
o due to the presence of the lone pair on the central S atom.
See the diagrams and explanation regarding VSEPR in the reference cited below:
http://butane.chem.uiuc.edu/cyerkes/Chem102AEFa07/Lecture_Notes_102/newLecture%2014-102.htm