MCQ
(image) $CH_3CH_2CHO+PCl_5 \to (B)$, $(A)$ and $(B)$ are


- Agem-dihalides
- B$(A)$ gem-dihalide, $(B)$ Vic-dihalide
- CVic-dihalides
- ✓$(A)$ Vic-dihalide, $(B)$ gem-dihalide


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$\mathrm{Eu}^{3+}, \mathrm{Lu}^{3+}, \mathrm{Nd}^{3+}, \mathrm{La}^{3+}, \mathrm{Sm}^{3+}$
$\mathrm{C}-\mathrm{Cl}, \mathrm{C}-\mathrm{Br}, \mathrm{C}-\mathrm{F}, \mathrm{C}-\mathrm{I}$
