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Cl 17

Abundance: 0.0%

Chlorine, periodic table Cl, is a gas with 17 protons. It's most common isotope is CL35 with an occurrence of 76% and with CL37 making up the other 24%.

Chlorine is abundant on the Martian surface where is is combined in many minerals, notably sodium chloride, or table salt. Chlorine is a precursor required for the production of polyvinyl chloride plastics, or PVC.

In situ Production

Chlorine is not available as a gas from the Martian atmosphere. However it could be produced in situ from Sodium chloride as a co-product in the preparation of caustic soda (NaOH )

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