Q45 / 200 · WBJEE 2013 · Chemistry
For $\mathrm{BCl}_{3}, \mathrm{AlCl}_{3}$ and $\mathrm{GaCl}_{3}$ the increasing order of ionic character is
- A$\mathrm{BCl}_{3} < \mathrm{AlCl}_{3} < \mathrm{GaCl}_{3}$
- B$\mathrm{GaCl}_{3} < \mathrm{AlCl}_{3} < \mathrm{BCl}_{3}$
- Correct answerC$\mathrm{BCl}_{3} < \mathrm{GaCl}_{3} < \mathrm{AlCl}_{3}$
- D$\mathrm{ACCl}_{3} < \mathrm{BCl}_{3} < \mathrm{GaCl}_{3}$
Solution
Since, ionic character is inversely proportional to polarising power of cation therefore correct order is
$$
\mathrm{AICl}_{3}>\mathrm{GaCl}_{3}>\mathrm{BCl}_{3}
$$
Hence, the correct answer is option: 'C'.