All the member of a homologous series can be represented by the same general formula. Choose the INCORRECT formula from among the following.
Alkane - CnH2n+2
Alkene - CnH2n+1
Alkyne - CnH2n-2
1
Alkane - CnH2n+2 and Alkyne - CnH2n-2
2
Alkene - CnH2n+1
3
Alkane - CnH2n+2
4
Alkyne - CnH2n-2