The SO3 molecule has a central S atom with the three O atoms bonded to the S, as shown in the figure. When a single Lewis structure is written for SO3 that obeys the octet rule for all the atoms, which of the following statements is or are true? I. The Lewis structure has one double bond. II. The three oxygen atoms do not all have the same formal charge. III. The formal charge on the S atom is +1.
Only one of the statements is true.
I and II are true.
I and III are true.
All three statements are true.
