- A$NO, NO_2, O_2^{2+}, O_2^{ 2-}$
- ✓$O_2^+, O_2^ -, NO, NO_2$
- C$C_2, B_2, O_2, S_2$
- D$B_2, N_2, O_2, O_2^-$
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$\left[\right.$ Given $, E_{C u^{2+} / C u}^{o}=0.34\, V , E _{ NO _{3}^{-} / NO_2 }^{\circ}=0.96\, V$ (Rounded-off to the nearest integer) $E _{ NO _{3} / NO _{2}}^{\circ}=0.79 \,V$ and at $298 \,K$ $\left.\frac{ RT }{ F }(2.303)=0.059\right]$
Statement $-I :$ The pentavalent oxide of group$- 15$ element. $E _{2} O _{5}$. is less acidic than trivalent oxide. $E _{2} O _{3}$. of the same element.
Statement $-II :$ The acidic character of trivalent oxide of group $15$ elements. $E _{2} O _{3}$. decreases down the group.
In light of the above statements. choose most appropriate answer from the options given below
$(I)$ Cis $-[Co(NH_3)_2(en)_2]^{+3}$
$(II)$ Trans $-[Ir \,Cl_2\, (C_2O_4)_2]^{-3}$
$(III)$ $[Rh(en)_3]^{+3}$
$(IV)$ Cis $-[Ir(H_2O)_3Cl_3]$
