Fun. group formula = 
2)
3)
Name of fun. group = keonic group or oxo group
Defi :
The organic compounds containing [ketonic] functional group with general formula OR CnH2nO called ketones.
Classification of ketones
1) Simple OR Symmetried ketones :
The ketones containing two similar alkyl groups attached to ketonic group are called symmetrical ketones.
EX.
1)
 |
| dimethyl ketone |
2)
 |
| diethyl ketone |
Mixed OR Unsymmetrical ketones :
The ketones containing two dissimilar alkyl groups attached to ketonic group called mixed ketones.
Ex.
1)
 |
| ethyl, methyl ketone |
 |
| Sec. Butyl Isopropyl ketone |
 |
| Isopropyl, n-propyl ketone |