\begin{table}%[b]%ta4 
\caption{\label{tab:reacli}List of reactions for the lithium chemistry.}
%%\centering

\par
\small
\begin{tabular}{l l l l}
\hline
\hline
& Reaction & & Reaction\\
\hline
Li1 & ${\rm Li^+ + e^- \rightarrow Li + \gamma}$ & Li2 & ${\rm Li + \gamma \rightarrow Li^+ + e^-}$\\
Li3 & ${\rm Li^+ + H^- \rightarrow Li + H}$ & Li4 & ${\rm Li^- + H^+ \rightarrow Li + H}$\\
Li5 & ${\rm Li + e^- \rightarrow Li^- + \gamma}$ & Li6 & ${\rm Li^- + \gamma \rightarrow Li + e^-}$\\
Li7 & ${\rm Li + H^+ \rightarrow Li^+ + H}$ & Li8 & ${\rm Li + H^+ \rightarrow Li^+ + H + \gamma}$\\
%Li9 & ${\rm Li(2s) + H \rightarrow LiH + \gamma}$ & Li10 & ${\rm LiH + \gamma \rightarrow Li(2s) + H}$\\
%Li11 & ${\rm Li(2p) + H \rightarrow LiH + \gamma}$ & Li12 & ${\rm Li(2p) + H \rightarrow LiH + \gamma}$\\
Li9 & ${\rm Li + H^- \rightarrow LiH + e^-}$ & Li10 & ${\rm Li^- + H \rightarrow LiH + e^-}$\\
Li11 & ${\rm LiH^+ + H \rightarrow LiH + H^+}$ & Li12 & ${\rm LiH + H^+ \rightarrow LiH^+ + H}$\\
Li13 & ${\rm LiH + H \rightarrow Li + H_2}$ & Li14 & ${\rm Li^+ + H \rightarrow LiH^+ + \gamma}$\\
Li15 & ${\rm Li + H^+ \rightarrow LiH^+ + \gamma}$ & Li16 & ${\rm LiH + H^+ \rightarrow LiH^+ + H}$\\
Li17 & ${\rm LiH + H^+ \rightarrow Li^+ + H_2}$ & Li18 & ${\rm LiH^+ + e^- \rightarrow Li + H}$\\
Li19 & ${\rm LiH^+ + H \rightarrow Li + H_2^+}$ & Li20 & ${\rm LiH^+ + H \rightarrow Li^+ + H_2}$\\
Li21 & ${\rm LiH^+ + \gamma \rightarrow Li^+ + H}$ & Li22 & ${\rm LiH^+ + \gamma \rightarrow Li + H^+}$\\
Li23 & ${\rm Li^{2+} + e^- \rightarrow Li^+ + \gamma}$ & Li24 & ${\rm Li^+ + \gamma \rightarrow Li^{2+} + e^-}$\\
Li25 & ${\rm Li^{3+} + e^- \rightarrow Li^{2+} + \gamma}$ & Li26 & ${\rm Li^{2+} + \gamma \rightarrow Li^{3+} + e^-}$\\
\hline
\end{tabular}
\end{table}