Which chemical symbol represents chlorine gas?

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Multiple Choice

Which chemical symbol represents chlorine gas?

Chlorine gas is composed of diatomic molecules, so in its elemental form the symbol is Cl2. A single Cl would be just a chlorine atom, not a molecule of chlorine gas. The other options are chlorine-containing compounds: Cl2O would be a dichlorine oxide, and ClO is a chlorine-oxygen compound as well. Therefore, the correct representation for chlorine gas is Cl2.

Chlorine gas is composed of diatomic molecules, so in its elemental form the symbol is Cl2. A single Cl would be just a chlorine atom, not a molecule of chlorine gas. The other options are chlorine-containing compounds: Cl2O would be a dichlorine oxide, and ClO is a chlorine-oxygen compound as well. Therefore, the correct representation for chlorine gas is Cl2.

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