Identify the correct statements from the following:

The incorrect statement among the following is:

1.  SnF₄ is ionic in nature.

2.  PbF₄ is covalent in nature.

3.  SiCl₄ is easily hydrolysed.

4.  GeX₄ (X = F, Cl, Br, I) is more stable than GeX₂

Which of the following species is not stable?

The correct statement among the following is :

Which of the following pairs contain species that are not isostructural?

$Pb{O}_2$ $\to$ $PbO$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $∆G_{298}$ $<0$
$Sn{O}_2\to SnO$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $∆G_{298}$ $>$ $0$

The most probable oxidation state of Pb & Sn will be:

1. ${\mathrm{Pb}}^{+4},$ ${\mathrm{Sn}}^{+4}$

2. ${\mathrm{Pb}}^{+4}$ $,$ ${\mathrm{Sn}}^{+2}$

3. ${\mathrm{Pb}}^{+2}$ $,$ ${\mathrm{Sn}}^{+2}$

4. ${\mathrm{Pb}}^{+2}$ $,$ ${\mathrm{Sn}}^{+4}$