From the following compounds, identify the one which is most acidic.
Arrange the following compounds in the decreasing order of reactivity towards $$\mathrm{S}_{\mathrm{N}} 1$$ reaction.
Given below are 4 species with one odd electron on the Carbon atom.
$$\begin{array}{ll}
\mathrm{A}=\left(\mathrm{CH}_3\right)_3 \stackrel{\bullet}{\mathrm{C}} & \mathrm{B}=\left(\mathrm{C}_6 \mathrm{H}_5\right)_3 \stackrel{\bullet}{\mathrm{C}} \\
\mathrm{C}=\left(\mathrm{C}_6 \mathrm{H}_5\right)_2 \stackrel{\bullet}{\mathrm{C}} \mathrm{H} & \mathrm{D}=\left(\mathrm{CH}_3\right)_2 \stackrel{\bullet}{\mathrm{C}} \mathrm{H}
\end{array}
$$
Choose the correct decreasing order of stability of the species.
Rank the following compounds in order of increasing basicity.
