MCQ
Which of the following ions has the smallest radius
- ✓$B{e^{2 + }}$
- B$L{i^ + }$
- C${O^{2 - }}$
- D${F^ - }$
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$(I)\, [Co(NO_2)_3(NH_3)_3]$
$(II)$ cis $-[ RhCl_2 (NH_3)_4]^+$
$(III)\, [Cr(OX)_3]^{-3}$
$(IV)$ cis $ -[PtCl_2 (en)]$
$(V)$ trans $-[Cr(en)_2 Br_2]^+$
$(VI)$ cis $-[Cr(en)_2 Br_2]^+$