Answer:
Alkane with
n
C
atoms :
C
n
H
2
n
+
2
Alkene with
n
C
atoms :
C
n
H
2
n
Alkyne with
n
C
atoms :
C
n
H
2
n
−
2
The compounds clearly differs in the number of H atoms per molecule and hence cannot be considered as isomer
Step-by-step explanation: