Question

Write iupac name for following compound: C3H8,C3H6,C3H4. ?

Answer 1

`C_3H_8-="propane"`

Explanation:

`C_3H_6-="propene or propylene"`

And for `C_3H_4`, we got `"allene"-=H_2C=C=CH_2`...I think, and Ernest will correct me if I am wrong, that this is formally called `"propadiene"`...most inorganic chemists would call it `"allene"`.

The structure of allene is interesting in that the planes of the `CH_2` groups are normal to each other to give a formal `D_(2d)` point group.

Answer 2

Please refer explanation

Explanation:

`C_3H_8` is called propane , it is the `3^(rd)` member of the homologous series of alkanes .
`C_3H_6` (propelene) is propene and `C_3H_4` is propyne (methyl acetlene)