The boiling points of Iodomethane, Dibromomethane, Bromomethane, Chloromethane follow the order
1
Bromomethane > Dibromomethane > Iodomethane > Chloromethane
2
Bromomethane > Iodomethane > Chloromethane > Dibromomethane
3
Dibromomethane > Iodomethane > Bromomethane > Chloromethane
4
Iodomethane > Bromomethane > Chloromethane > Dibromomethane