MCQ
Which of the following has largest size
- ✓$Al$
- B$A{l^ + }$
- C$A{l^{2 + }}$
- D$A{l^{3 + }}$
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$\mathrm{A}(\mathrm{g}) \rightarrow 2 \mathrm{~B}(\mathrm{~g})+\mathrm{C}(\mathrm{g})$
| S.No | Time/s | Total Pressure/(atm) |
| $1.$ | $0$ | $0.1$ |
| $2.$ | $115$ | $0.28$ |
The rate constant of the reaction is_____$\times 10^{-2} \mathrm{~s}^{-1}$ (nearest integer)

[Given : $R_{\mathrm{H}}\left(\right.$ Rydberg constant) $=2.18 \times 10^{-18} \mathrm{~J}$.
$h($ Plank's constant $)=6.6 \times 10^{-34}$ J.s. $]$