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Chlorine is a chemical element; it has symbol Cl and atomic number 17. ... These are its only two natural isotopes occurring in quantity, ...
Stable chlorine-37 makes up about 24.23% of the naturally occurring chlorine on earth. Variation occurs as chloride mineral deposits have a slightly elevated chlorine-37 balance over the average found in sea water and halite deposits. [citation needed]
Chlorine has two stable and naturally occurring isotopes, chlorine-35 and chlorine-37. However, there are trace amounts in nature of the isotope chlorine-36, which occurs via spallation of argon-36. A total of 24 isotopes of chlorine have been discovered, with atomic masses ranging from 28 to 51. [7]
Estimates are also made of natural chlorine contents in Earth's reservoirs and the form they are stored in. [1] [2] [3] The mantle constitutes the largest reservoir of chlorine at 22 x 10 12 teragrams. [2] Chlorine is cycled through the pedosphere via biotic and abiotic processes that lead to this reservoir acting as a sink. [1] [3] [4] [5]
Abundance (atom fraction) of the chemical elements in Earth's upper continental crust as a function of atomic number; [5] siderophiles shown in yellow Graphs of abundance against atomic number can reveal patterns relating abundance to stellar nucleosynthesis and geochemistry.
Chlorine-36 (36 Cl) is an isotope of chlorine. Chlorine has two stable isotopes and one naturally occurring radioactive isotope, the cosmogenic isotope 36 Cl. Its half-life is 301,300 ± 1,500 years. [1] 36 Cl decays primarily (98%) by beta-minus decay to 36 Ar, and the balance to 36 S. [1]
"Mixing chlorine bleach (sodium hypochlorite) with vinegar (acetic acid) is not recommended, at all, due to the potential chemical reaction that can occur, leading to the release of harmful gases ...
A large fraction of the chemical elements that occur naturally on the Earth's surface are essential to the structure and metabolism of living things. Four of these elements (hydrogen, carbon, nitrogen, and oxygen) are essential to every living thing and collectively make up 99% of the mass of protoplasm. [1]