All possible isomers for C5H10Br2 and their IUPAC nomenclature is given in the attached document.
Here is a brief idea
IUPAC names for different isomers of C6H10Br2 in order are :
9 structures of ...
There are 21 possible isomers of C6H10Br2. These vary on the basis of parent compound which can be of three structures. These are as follows.
9 structures of pentane
10 structures of methyl butane
2 structures propane