| LIST-I | LIST-II | ||
| A. | Carbocation | I. | Species that can supply a pair of electrons. |
| B. | C-Free radical | II. | Species that can receive a pair of electrons. |
| C. | Nucleophile | III. | sp2 hybridized carbon with empty p-orbital. |
| D. | Electrophile | IV | sp2/sp3 hybridized carbon with one unpaired electron. |