MCQ
Effective atomic number of iron in brown ring complex is
- A$35$
- B$36$
- C$37$
- D$34$
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$(I)\, s-$ orbital of $A$ and $P_x$ -orbital of $B$
$(II)\, s-$ orbital of $A$ and $P_z$ orbital of $B$
$(Ill)\, p_y$ -orbital of $A$ and $p_z$ orbital of $B$
$(IV)\, s-$ orbital of both $(A)$ and $(B)$

$2{H_2}{O_2}(l) \rightleftharpoons {H_2}O(l) + {O_2}(g)$
$(R = 83\, JK^{-1}\, mol^{-1})$
| LIST-I (Family) | LIST-II (Symbol of Element) | ||
| A. | Pnicogen (group 15) | I. | Ts |
| B. | Chalcogen | II. | Og |
| C. | Halogen | III. | Lv |
| D. | Noble gas | IV. | Mc |
$\mathrm{C}_{3} \mathrm{H}_{6} \stackrel{\mathrm{H}^{+} / \mathrm{H}_{2} \mathrm{O}}{\longrightarrow} A\xrightarrow[dil.\,KOH]{KIO} B+C$
The compounds $B$ and $C$ respectively are :