which of the following staternents is/are wrong? 

The following reactions occur:

i. ${\mathrm{P}}_4+5{\mathrm{O}}_2\stackrel{ }{\to }{\mathrm{P}}_4{\mathrm{O}}_{10}$

ii. ${\mathrm{P}}_4+3{\mathrm{O}}_2\stackrel{ }{\to }{\mathrm{P}}_4{\mathrm{O}}_6$

$1.24 \mathrm{g} \mathrm{of} {\mathrm{P}}_4 \mathrm{reacts} \mathrm{with} 8.0 \mathrm{g} \mathrm{of} {\mathrm{O}}_2$

${\mathrm{n}}_{{\mathrm{P}}_4}=\frac{1.24}{31\times 4}=0.01\mathrm{mol},{\mathrm{n}}_{{\mathrm{O}}_2}=\frac{8}{32}=0.25\text{ moles }$

In reaction (i), moles of O₂ required

= (0.01 mol P₄) $\left(\frac{5 \mathrm{mol} {\mathrm{O}}_2}{\mathrm{mol} {\mathrm{P}}_4}\right)$

=0.01 x 5=0.05 mol

Since there is more O₂ present than required

1. Therefore, P₄ is the limiting quantity.

2. Wrong

3.  $\left[\mathrm{Mw} {\mathrm{P}}_4{\mathrm{O}}_{10}=284\right]$

0.01 mol of P₄ produces = 0.01 mol of P₄O₁₀

$\begin{array}{l}=\left(0.01 \mathrm{mol} {\mathrm{P}}_4\right)\left(\frac{1 \mathrm{mol} {\mathrm{P}}_4{\mathrm{O}}_{10}}{\mathrm{mol} {\mathrm{P}}_4{\mathrm{O}}_{10}}\right)\left(\frac{284 \mathrm{g} {\mathrm{P}}_4{\mathrm{O}}_{10}}{\mathrm{mol} {\mathrm{P}}_4{\mathrm{O}}_{10}}\right)\\ =0.01\times 284=2.84\mathrm{g}\end{array}$

Hence, (3) is wrong

4. $\left[\mathrm{Mw} \mathrm{of} {\mathrm{P}}_4{\mathrm{O}}_6=220\right]$

Weight of ${\mathrm{P}}_4{\mathrm{O}}_6$ produced

$\begin{array}{l}=\left(0.01 \mathrm{mol} {\mathrm{P}}_4\right)\left(\frac{1 \mathrm{mol} {\mathrm{P}}_4{\mathrm{O}}_6}{\mathrm{mol} {\mathrm{P}}_4{\mathrm{O}}_6}\right)\left(\frac{220 \mathrm{g} {\mathrm{P}}_4{\mathrm{O}}_6}{\mathrm{mol} {\mathrm{P}}_4{\mathrm{O}}_6}\right)\\ =0.01\times 220=2.2\mathrm{g}\end{array}$

Hence, (4) is wrong