There are many types of instructions n x86, and their sizes vary from 2bytes(I think) to 17bytes.
I did not really understand your question though, can you please elaborate on what you need ot know?
actually the i wanted to know how much bytes does an instruction take up in 8086 like MOV AX,BX takes up two bytes
sismilarly how many types are there of these instructions based on the number of bytes they take
and what is the max nof bytes possible to tkae up by an instruction in 8086