MCQ
In the complex $K_2Fe[Fe(CN)_6 ]$
- ✓both $Fe$ atoms are in the same oxidation state
- Bboth $Fe$ atoms are in different oxidation state
- Cthe coordination number of ion is $4$
- Dthe complex is a high spin complex
Pentaamminecyanidochromiun $(III)$ hexanitrito $-N-$ irridate $(III)$.
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Statement $II :$ As the size of the elements $\mathrm{F}, \mathrm{Cl}, \mathrm{Br}, \mathrm{I}$ increases down the group, the bond strength of $\mathrm{HF}$, HCl, HBr and HI decreases and so the acid strength increases.
In the light of the above statements, choose the correct answer from the options given below.

