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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$(I)$ The radius of an anion is larger than that of the parent atom.
$(II)$ The ionization energy generally increases with increasing atomic number in a period.
$(III)$ The electronegativity of an element is the tendency of an isolated atom to attract an electron.
Which of the above statements is/are correct?

$(I)\, [CrCl_2(NO_2)_2(NH_3)_2]^-$ $(II)\, [Co(NO_2)_3(NH_3)_3]$
$(III)\, [PtCl(NO_2)(NH_3 )(py)]$ $(IV)\, [PtBrCl(en)]$
$(I)\,\,\,-\,\,\,(II)\,\,\,-\,\,\,(III)\,\,\,-\,\,\,(IV)$