MCQ
' $A$ ' in the given reaction is


- A

- ✓

- C

- D








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($\Delta _o =$ crystal field splitting energy in an octahedral field, $P =$ Electron pairing energy)
$(I)\, [Co(NO_2)_3(NH_3)_3]$
$(II)$ 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 $-[Cr(en)_2 Br_2]^+$
