Giving proper justification categorise the following molecules/ions as nucleophile or electrophile : HS^(-), BF_(3), C_(2)H_(5)O^(-), (CH_(3))_(3)N, Cl^(+), CH_(3)overset(+)(C) = O, H_(2)N:^(-), overset(+)(N)O_(2).

Giving proper justification categorise the following molecules/ions as

1.	Giving proper justification categorise the following molecules/ions as nucleophile or electrophile : HS^(-), BF_(3), C_(2)H_(5)O^(-), (CH_(3))_(3)N, Cl^(+), CH_(3)overset(+)(C) = O, H_(2)N:^(-), overset(+)(N)O_(2).
Answer» SOLUTION :(i) Nucleophiles : `Hunderset(..)overset(..)(S):^(-), C_(2)H_(5)UNDERSET(..)overset(..)(O):^(-), (CH_(3))_(3)N:, H_(2)overset(..)(N):^(-)` All these species have one or more lone pairs of electrons which it can easily donate to an ELECTROPHILE and hence behave as nucleophiles. (ii) Electrophiles : `BF_(3), Cl^(+), CH_(3)overset(+)(C) = O, overset(+)(N)O_(2)` All the POSITIVELY charged species have a sextet of electrons around the positively charged atom and hence can accept a pair of electrons and them behave as electrophiles. Similarly, B has only a sextet of electrons in the valence shell and hence `BF_(3)`, though neutral, also ACTS as an electrophile.