Explanation:
\begin{tabular}{|c|c|c|c|}
\cline(1-4)
\multicolumn{4} {lc|}{Elementary Particles} \\
\cline{1-4}
\multicolumn{2}{c}{Fermions) &
\multicolumn {2}{c}{Bosons) \\
\cline(1-4) Quarks & Leptons & Gauge Bosons & Scalar Bosons \\
\cline{1-4} Up & Electron & Photon & Higgs Boson \\
Down & Electron Neutrino & W and Z Bosons & \\ Charm & Muon & Gluons & \\ Strange & Muon Neutrino & & \\ Top & Tau & & \\\ Bottom & Tau Neutrino & & \\
\cline(1-4)
\end{tabular}
