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.
The most chemically active element is the halogen known as fluorine. Be
Yes, oxygen is an active nonmetal. It is highly reactive and forms compounds with many elements.
Fluorine is the most chemically active halogen due to its small atomic size and high electronegativity, which allows it to readily react with a wide variety of other elements.
Uranium is considered a chemically active element because it can form compounds with other elements, such as oxygen or fluorine. These compounds have various industrial and scientific applications, but uranium itself is primarily known for its use in nuclear reactions and weapons.
Sulfur (S) is classified as an active nonmetal in period 4.
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.
Fluorine is sometimes called the hungry wolf of the periodic table because it is the most reactive element.
The most active nonmetal element is fluorine.
Fluorine
Fluorine
Halogens
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.
Hydrogen...
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.
The most active metal is francium (Fr). It is located farthest to the left and at the bottom. The most active nonmetal is fluorine (F). It is located at the top of Group 17 (the halogens).
Covalent Bond. Chemically Active. The only elements that are inert are group 18, or 8A.
The most chemically active element is the halogen known as fluorine. Be