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Final Answer:Thepoint groupfor 1,3,5-trichlorobenzene is D3h.Explanation:1,3,5-trichlorobenzene possesses a D3h point group due to its three perpendicular C2 axes passing through the Cl-C-Cl bonds. This molecule also features ahorizontal mirror plane(σh) containing the C-Cl bonds and a vertical mirror plane (σv) perpendicular to the C2 axes. These elements collectively lead to the determination of the D3h point group, which signifies the presence of three C2 axes, three σv planes, one σh plane, and an inversion center.In greater detail, the three C2 axes are arranged at 120-degree angles from each other, allowing for rotations by 120 and 240 degrees. The σv planes pass through the central C-Cl bond and bisect the molecule along the vertical axis. The σh plane isperpendicularto the C2 axes and bisects the molecule horizontally. Finally, the inversion center is located at the center of the molecule, where all three C-Cl bonds converge.Learn more aboutpoint groupbrainly.com/question/34712963#SPJ11...