Molecular formula CnH2n, when n = 2 common, 3 ...A double bond between C HC with at least 1 = C bond.It is not saturated hydrocarbon compounds (unsaturated hydrocarbons). There are 120° bond angles between.
General molecular formula CnH2n when n = 2,3, ... HC is a double bond between at least one C = C bonds are unsaturated hydrocarbons (unsaturated hydrocarbons) have 120-degree angle between the bonds.
Molecular formula general CnH2n when n =,, 2 3... a HC with double bonds between C = C at least 1 bonding is a compound injection of unsaturated carbon (unsaturated hydrocarbons) is the angle between the bond 120 degrees