MCQ
Which of the following compound show optical isomerism?
- Acis $-[CrCl_3 (NHI_3)_3]$
- ✓$[Co(en)_3]^{3+}$
- Ccis $- [Co(NH_3)_4Cl_2]^+$
- Dtrans $-[Co(en)_2 Cl_2]^+$

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$ {\left[\mathrm{Ag}\left(\mathrm{NH}_3\right)\right]^{+}+\mathrm{NH}_3 \rightleftharpoons\left[\mathrm{Ag}\left(\mathrm{NH}_3\right)_2\right]^{+} ; \mathrm{k}_2=1.7 \times 10^{-3}}$
then the formation constant of $\left[\mathrm{Ag}\left(\mathrm{NH}_3\right)_2\right]^{+}$is