Chlor ∙ chlore ∙ cloro ∙ cloro
group ‘h+h’ / hydrogen and halogens / RH
- melting point: -100.98°C
- boiling point: -34.6°C
- density: 2.95 g/l
In the top meter of the lithosphere, 36Cl is generated primarily by thermal neutron activation of 35Cl and spallation of 39K and 40Ca. — wikipedia
☢ radioisotopes: Cl-36 (T1/2=3302 ka) cosmogenic
Additionally, large amounts of 36Cl were produced by irradiation of seawater during atmospheric and underwater test detonations of nuclear weapons between 1952 and 1958. — still wikipedia