`overset(..)(N)H_(3), R overset(..)(N)H_(2), R_(2)NH, R_(3) overset(..)(N), H_(2)overset(..)(O):, R underset(..)overset(..)(O) R, H_(2) overset(..)S:, R underset(..)overset(..)(S )H, R underset(..)overset(..)S R`, etc., are neutral nucleophils

Explain how the hybrid structure is related to the structures of each of the following pairs of contributing resonance structures? (a) overset(oplus)(C )H_(2) underset((i))- underset(..)overset(Θ)C H_(2) harr CH_(2) underset((ii))= CH_(2) (b) H_(2)C underset((iii))= overset(..)(O): harr H_(2)C underset((iv))- underset(..)overset(..)O:^(-) (c ) R_(2) overset(+)C- underset(underset(underset((v))(R ))(|))C= overset(..)O: harr underset((vi))(R_(2)C = underset(underset(R )(|))(C) - overset(..)O:^(+)) (d) underset((VII)) (R-C^(+) = overset(..)(O): )harr underset((VIII))(R-C-= O:^(+)) (e ) underset((IX))(R- underset(underset( :O: )(||))(C)- underset(..)overset(..)OH) harr underset((IX))(R- underset(underset( :underset(..)(O): )(|))(C) - ""^(oplus")underset(..)OH)

H_(3)C-CH_(2)-overset(CH_(3))overset(|)CH-underset(O)underset(||)C-NH_(2)overset(Br_(2)+KOH)underset(Delta)toA overset(1.CH_(3)"I(excess)")underset(2.AgOH,Delta)toB .

H_3C -underset(CH_3)underset(|) overset(CH_3)overset(|)C-H+ C Cl_4 underset(hv)overset(R_2O_2)to " Product" :

underset(OH^(-))overset(KMnO_(4))rarr A underset(H_(2)SO_(4))overset(Dil)rarr B

Adipic acid underset(H^+)overset(2EtOH)to P overset(EtOH)to Q underset(2Br(CH_2)_3 CO_2. Et)overset(1. EtO)to R , R is

Correct the given structure H= overset(H ) overset(|) C- underset(* *) overset( : O : ) overset(|) C-overset(* *)O-H

C_(6)H_(5)N_(2)Cl underset(KCN)overset(CuCN)rarr A underset(H^(+))overset(H_(2)O)rarr B underset(Delta)overset(NH_(3))rarr C underset(NaOH)overset(Br_(2))rarr D . Identify the final product, D.

Write the IUPAC names of the compounds i-iv from their given structures. (i) overset(1)(C)H_(3)-overset(2)(C)H_(2)-underset(OH)underset("| ")overset("3 ")(CH)-overset(4)(C)H_(2)-overset(5)(C)H_(2)-underset(CH_(3))underset("| ")overset("6 ")(CH)-overset(7)(C)H_(2)-overset(8)(C)H_(3) (ii) underset(6)(C)H_(3)-underset(5)(C)H_(2)-underset(4)overset(O)overset(||)(C)-underset(3)(C)H_(2)-underset(2)overset(O)overset(||)(C)-underset(1)(C)H_(3) (iii) underset(6)(C)H_(3)-underset(5)overset(O)overset(||)(C)-underset(4)(C)H_(2)-underset(3)(C)H_(2)-underset(2)(C)H_(2)-underset(1)(C)OOH (iv) underset(6)(C)H-=underset(5)(C)-underset(4)(C)H=underset(3)(C)H-underset(2)(C)H=underset(1)(C)H_(2)