Assign the priority order number of the following atoms or groups.
(a) `-CHO,-CH_(2)OH,-CH_(3),-OH`
(b) `-Ph,-CH(Me)_(2),-H,-NH_(2)`
(c) `-COOH,-Ph,-CHO,-C-=CH,-Ph`
(d) `-CH(Me)_(2),-CH=CH_(2),-CH_(2),-C-=CH,-Ph`
(e) `-CH_(3),-CH_(2)Br,-CH_(2)OH,-CH_(3)Cl`
(f) `-H,-N,(Me)_(2),-Me,-OMe`
(g) `-CH=CH_(2),-Me,-Ph,-Et`
(h) `-CH_(2)-CH_(2)-Br,-Cl,-CH_(2)-CH_(2)-CH_(2)-Br,(Me)_(2)CH-`
(i) `-Cl,-Br,-I,-NH_(2)`
(j) `NH_(2),NO_(2),CH_(2)NH_(2),C-=N`

Answer

[(a) 4,1,2,3 (b) 4,1,2,3 (c) 1,3,2,4 (d) 4,3,2,1 (e) 2,3,4,1 (f) 4,2,3,1 (g) 3,1,4,2 (h) 2,4,1,3 (i) 3,2,1,4 , (j) 2,1,4,3