a) 1 Mark
b) 2 Marks
(a) Alkyl group: An alkyl group or alkyl radical is obtained by removing one atom of hydrogen from an alkane molecule. An alkyl group is named by changing the suffix -ane of the alkane with the suffix -yl. The alkyl group has unpaired electron which is indicated by a line.
(b) Name of simple alkyl radicals:
NameMolecularformulaCondunsedformulaMethyl−CH3−CH3MethylEhyl−C2H5−CH2CH3EthylPropyl−C3H7−CH2−CH2−CH3n−Propyland|CH3−CH−CH3Isopropy
Alkyl radical or group is formed by the removal of one hydrogen atom from the corresponding alkane.
CnH2n+2(Alkane)−H−−→−CnH2n+1(Alkyl radical)