MCQ
Red phosphorus is less reactive than yellow phosphorus because
- AIts colour is red
- ✓It is highly polymerised
- CIt is hard
- DIt is insoluble in ${C_2}{H_5}OH$
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$C{H_3} - CH = O + {C_6}{H_5} - CH =O \xrightarrow[\Delta ]{{\mathop O\limits^\Theta H\,\left( {aq} \right)}}\mathop X\limits_{{\text{(}}{{\text{C}}_4}{{\text{H}}_6}{\text{O)}}} + \mathop Y\limits_{{\text{(}}{{\text{C}}_9}{{\text{H}}_8}{\text{O)}}} $
$\mathrm{Eu}, \mathrm{Cm}, \mathrm{Er}, \mathrm{Tb}, \mathrm{Yb}$ and $\mathrm{Lu}$

$\begin{array}{l}
Mg(s) + 2A{g^ + } \to M{g^{ + 2}} + 2Ag(s)\\
\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,{\rm{(0}}{\rm{.0001M) (0}}{\rm{.100M)}}
\end{array}$
If $E_{cell}^o = 3.17\,V$