how to draw structure of complex compounds like s2o3-2 ,s2o5 -2 to kno that which type of bond is present like in s2o7-2 there is no s-s bond ..
1. The structures as shown :
![](https://s3mn.mnimgs.com/img/shared/ck-files/ck_5617d88c6051a.png)
2. The bond so presents are to be learnt,no other way to ensure which bond is present as the structures are predefined.
![](https://s3mn.mnimgs.com/img/shared/ck-files/ck_5617d88c6051a.png)
2. The bond so presents are to be learnt,no other way to ensure which bond is present as the structures are predefined.