MCQ
In the wet tests for identification of various cations by precipitation, which transition element cation doesn't belong to group $IV$ in qualitative inorganic analysis?
- ✓$Fe ^{3+}$
- B$Zn ^{2+}$
- C$CO ^{2+}$
- D$Ni ^{2+}$
$Fe ^{3+}= III ^{ rd } \text { Group }$
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| List $-I$ | List $-II$ |
|
$A.$ Melting point $[\mathrm{K}]$ |
$I.$ $\mathrm{Tl}>\mathrm{In}>\mathrm{Ga}>\mathrm{Al}>\mathrm{B}$ |
|
$B.$ Ionic Radius $\left[\mathrm{M}^{+3} / \mathrm{pm}\right]$ |
$II.$ $\mathrm{B}>\mathrm{Tl}>\mathrm{Al} \approx \mathrm{Ga}>\mathrm{In}$ |
| $C.$ $\Delta_{\mathrm{i}} \mathrm{H}_1 $ $ [\mathrm{~kJ} \mathrm{~mol}^{-1}]$ | $III.$ $\mathrm{Tl}>\mathrm{In}>\mathrm{Al}>\mathrm{Ga}>\mathrm{B}$ |
| $D.$ Atomic Radius $[pm]$ | $IV.$ $\mathrm{B}>\mathrm{Al}>\mathrm{Tl}>\mathrm{In}>\mathrm{Ga}$ |
${\Delta _r}{G^o} = A - BT$
Where $A$ and $B$ are non -zero constant. Which of the following is $TRUE$ about this reaction?