Nucleophiles and electrophiles are reaction intermediates having electron rich and electron deficient centres respectively . Hence, they tend to attack electron deficient and electron rich centres respectively. Classify the following species as electrophiles and uncheophiles.
(i) `H_(3)CO^(-)`
(ii) `H_(3)C-overset(O)overset(||)C-O^(-)`
(iii)Cl
(iv)`Cl_(2)C:`
(v) `(H_(3)C)_(3)C^(+)`
(vi) `Br^(-)`
(vii) `H_(3)COH`
(viii) R-NH-R

Explanation

Electrophiles are electron deficient species. The may be natural or positively charged e.g., (iii)Cl, (iv)` Cl_(2)C:` (v)`(H_(3)C)_(3)C^(+)`
Nucleophiles are electron rich species. They may be neutral or negatively charged e.g., (i)`H_(3)CO^(-)`, (ii)`H_(2)C-overset(O)overset(||)C-O^(-)` (vi)`Br^(-)`, (vii)`H_(3)C-overset(..)underset(..)O-H`, (vii)`overset(..)(RNHR)`