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What colour is chlorine gas at room temperature?

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A labeled diagram of the chlorine element from the periodic table shows its atomic number 17, symbol Cl, electron configuration, and atomic weight range. The box is shaded green to indicate chlorine is a halogen, with icons for orthorhombic crystal structure, gas state at room temperature, and strong acidity. A key explains the icons and colors used. — chlorine Properties of chlorine.

At room temperature and atmospheric pressure, chlorine is a greenish yellow gas. It is a toxic and corrosive chemical element that is highly irritating to the eyes and the respiratory system.12