(i) Using curved-arrow notation, show the formation of reactive intermediates when the following covalent bonds undergo heterolytic cleavage.
(a) CH3–SCH3,
(b) CH3–CN,
(c) CH3–Cu
(ii) Giving justification, categories the following molecules/ions as nucleophile or electrophile:
HS– , BF3, C2H5O– , (CH3)3N;
\(C\overset{+}{l}\), \(CH_3-\overset{+}{C}-H_2N-:\),\(\overset{+}{N}O_2\)