MCQ
Which of the following compound may show optical activity
- ATrans $[CoCl_2(en)_2]^+$
- ✓$[Pt(NH_2CH(CH_3)COO)_2^-]$
- C$[Co(H_2O)_3F_3]$
- DAll are optically active

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In the above chemical reaction, intermediate $"X"$ and reagent/condition $"A"$ are
Reason : The third ionization energy of $Mn$ is larger than that of $Cr$.
$A$. $Al^{3+}$ $B$. $Cu^{2+}$ $C$. $Ba^{2+}$ $D$. $Co^{2+}$ $E$. $Mg^{2+}$
Choose the correct answer from the options given below.