Write the prefix and suffix for the following functional groups:
$(i)$ $-COCl$
$(ii)$ $-CONH_2$
$(iii)$ $-COOR$
$(iv)$ $-CHO$
$(v)$ $-COOH$
$(vi)$ $-COX$
$(vii)$ $-CO-$
$(viii)$ $-C \equiv N$
$(ix)$ $-COO^-$

(A) The prefixes and suffixes for the given functional groups are as follows:
| Group | Prefix | Suffix |
| :--- | :--- | :--- |
| $(i)$ $-COCl$ | Chlorocarbonyl | $-oyl \ chloride$ |
| $(ii)$ $-CONH_2$ | Carbamoyl | $-amide$ |
| $(iii)$ $-COOR$ | Alkoxycarbonyl | $-oate$ |
| $(iv)$ $-CHO$ | Formyl or Oxo | $-al$ |
| $(v)$ $-COOH$ | Carboxy | $-oic \ acid$ |
| $(vi)$ $-COX$ | Halocarbonyl | $-oyl \ halide$ |
| $(vii)$ $-CO-$ | Oxo | $-one$ |
| $(viii)$ $-C \equiv N$ | Cyano | $-nitrile$ |
| $(ix)$ $-COO^-$ | $-$ | $-oate$ |