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AP Chemistry
Cl₂ refers to chlorine gas, which is composed of two chlorine atoms covalently bonded together. It exists as a pale yellow-green gas at room temperature.
Any of the five elements (fluorine, chlorine, bromine, iodine, and astatine) in Group 17 of the periodic table.
Diatomic Molecule: A molecule composed of two atoms chemically bonded together.
Gas Phase: The state in which matter has no definite shape or volume and particles move freely.