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* Fluorine is found on Earth at about 585 mg/kg (crust) 1.3 mg/liter (ocean) * Chlorine is found on Earth at about 145 mg/kg (crust) 19400 mg/liter (ocean) * Bromine is found on Earth at about 2.4 mg/kg (crust) 67.3 mg/liter (ocean) * Iodine is found on Earth at about 0.45 mg/kg (crust) 0.06 mg/liter (ocean) * Astatine is not found on Earth in appreciable quantities (it has no stable isotopes) Earth's crust is about 8.5 * 1020 kg Earth's ocean is about 1.4 * 1018 liters This make fluorine the most abundant halogen *on Earth*, with chlorine 30% as abundant by mass, and 16% as abundant in number of atoms. Fluorine only has one stable isotope, whereas chlorine has two. Otherwise the race would not be even that close.

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15y ago
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9y ago

There are five halogens in the world. All of halogens are non metals. We use Chlorine for purify water.

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6y ago

This halogen is chlorine.

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3y ago

Chlorine

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Q: What is the most abundant and useful halogen?
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Related questions

Most abundant halogen?

The most abundant halogen in Earth's crust is fluorine. The most abundant halogen on Earth's surface for example is chlorine.


What is the most abundant halogen in the world?

chlorine


Which element has the largest radius in the halogen family?

Astatine, with a molecular weight of 210 amu.


What halogen has the most electrons?

This halogen is astatine.


Why is halogen elements not useful?

This question is based on chemistry. Halogens are useful elements. There are 5 halogens in the world.


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HCl is the most volatile halogen acid.


Which is the third most reactive halogen?

Bromine (Br2) is the third most reactive halogen.


What is chroline?

Chlorine is a chemical element with symbol Cl and atomic number 17. Chlorine is in the halogen group (17). Chlorine is most commonly found in sodium chloride. . It is the second most abundant halogen and 21st most abundant chemical element in Earth's crust. The great oxidizing potential of chlorine led it to its bleaching and disinfectant uses, as well as uses of an essential reagent in the chemical industry. As a common disinfectant, chlorine compounds are used in swimming pools to keep them clean and sanitary.


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Burnable fuels are inexpensive & abundant.


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