Arrange the following bonds according to their averge bond energies in descending order:
`C - Cl,C - Br ,C-R ,C-I`

Arrange the following bonds according to their averge bond energies in descending order: C - Cl,C - Br ,C-F ,C-I

Arrange the following in decreasing order of their C=C bond length

Arrange the following in increasing order of their bond lengths. C-C, C=C, C-=C

Arrange the following comounds in increasing order of length of their C-N bond.

Arrange with explanation the following bonds in the increasing order of their bond length and bond energy: H-H " " H-F H-Cl " " H-Br H-I