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Lead is the heaviest non-radioactive element. It was previously thought to be Bismuth, but in 2003, it was found to be weakly radioactive with a half-life of about 19 quintillion years (19 billion billion years). Because of it's ridiculously long half-life, Bismuth can be treated as if it is stable, but it will eventually decay into Thallium.

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What is the most chemically active nonmetal on the planet?

Fluorine is the most chemically active nonmetal on the planet. It is highly reactive and can form compounds with almost all elements due to its strong electronegativity.


Which of these elements is the most chemically active?

Fluorine is sometimes called the hungry wolf of the periodic table because it is the most reactive element.


What is the most active nonmetal in the periodic table of the elements?

The most active nonmetal element is fluorine.


What is the most chemically active of the elements?

Fluorine


What is is the most active nonmetal?

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What is the most chemically active nonmetals called?

Halogens


What are the kinds of nonmetal atoms?

Any element that is not a metal is, by definition, a nonmetal. These come in basically two types, the chemically active nonmetal and the inert nonmetal. Sulfur, oxygen, nitrogen, carbon, silicon, phosphorus, and the halogens, fluorine, chlorine, bromine, iodine, and astatine, are the most important of the chemically active nonmetals; hydrogen is an ambiguous element since it can be either a metal or a nonmetal, although it is usually a nonmetal (note that at low temperature and high pressure, hydrogen actually will become a metallic solid, with all the usual features of a metal, even though under more usual temperatures and pressures it is a transparent gas bearing no resemblance to a metal). The inert nonmetals are the noble gases, helium, neon, krypton, xenon, and radon.


What non-metal element is most chemically active?

Hydrogen...


8 letter word with the 4th letter o it is a most active nonmetal?

The most reactive nonmetal with eight letters and the fourth letter an O is chlorine. Chlorine acts as a catalyst in many reactions. It easily forms salts.


Where is the most active metal located on the periodic table Where is the most active nonmetal located?

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Is Carbon chemically active or inert?

Covalent Bond. Chemically Active. The only elements that are inert are group 18, or 8A.


The most active of all the chemical elements is a halogen known as?

The most chemically active element is the halogen known as fluorine. Be