Q73 / 200 · NEET 2007 · Chemistry
For (i) $\overline{\mathrm{I}}$, (ii) $\mathrm{Cl}^{-}$, (iii) $\mathrm{B} \overline{\mathrm{r}}$, the increasing order of nucleophilicity would be
- Correct answerA$\mathrm{Cl}^{-} < \mathrm{Br} < 1^{-}$
- B$\mathrm{l}^{-} < \mathrm{Cl}^{-} < \mathrm{Br}$
- C$\mathrm{Br} < \mathrm{Cl}^{-} < 1^{-}$
- D$\mathrm{l}^{-} < \mathrm{Br}^{-} < \mathrm{Cl}^{-}$
Solution
Nucleophilicity increases down the group in a periodic table.
$$
\mathrm{I}^{-}>\mathrm{Br}>\mathrm{Cl}^{-}>\mathrm{F}^{-}
$$
Hence, the correct answer is option: 'A'.