MCQ
The element with $Z = 120$ (not yet discovered) will be an/a
- AInner transition metal
- ✓Alkaline earth metal
- CAlkali metal
- DTransition metal
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$C{H_3} - \begin{array}{*{20}{c}}
{\begin{array}{*{20}{c}}
{C{H_3}} \\
|
\end{array}} \\
C \\
| \\
{C{H_3}}
\end{array} - C{H_2} - Cl$
[Given: The threshold frequency of platinum is $1.3$ $\times 10^{15} \,s ^{-1}$ and $h =6.6 \times 10^{-34} \,J \,s$.]

| Reactant |
$HIO_4$ consumed |
$HCO_2H$ formed |
$HCHO$ formed |
The $E _{\text {ceil }}$ for the given cell is $0.1115\,V$ at $298\,K$ when $\frac{\left[ M ^{+}( aq )\right]}{\left[ M ^{3+}( aq )\right]}=10^{ a }$
The value of a is
Given : $E _{ M ^{3+} / M ^{+}}=0.2\,V$
$\frac{2.303 RT }{ F }=0.059\,V$