1. astatine is a halogen that is radioactive.
Iodine is the element most similar to astatine. Both elements are in the halogen group on the periodic table, sharing similar chemical properties due to their valence electron configuration. Astatine is a rare and highly radioactive element, making it difficult to study in detail.
The most reactive nonmetal is fluorine
Halogen is the family of salt producing elements.
Most of them do. Radon probably does not.
Group 3 of the periodic table contains many of the radioactive elements.
Iodine is the element most similar to astatine. Both elements are in the halogen group on the periodic table, sharing similar chemical properties due to their valence electron configuration. Astatine is a rare and highly radioactive element, making it difficult to study in detail.
Most of the natural occurring (isotopes of) elements are NOT radioactive.Though most of all the known isotopes are radioactive but most of them do NOT naturally occur.
The most chemically active element is the halogen known as fluorine. Be
The halogen in period 6 is astatine. It is a radioactive element and is the rarest naturally occurring halogen on Earth.
The most reactive nonmetal is fluorine
The five elements in the halogen family are: F for fluorine Cl for chlorine Br for bromine I for iodine At for astatine But in organic chemistry, halogens are generally represented using 'X' (except for astatine as it is radioactive and doesn't have much application in organic chemistry).
Halogen is the family of salt producing elements.
Radioactive elements make up a small fraction of all naturally occurring elements in Earth's crust. Most elements are stable and non-radioactive. However, even though they are a minority, radioactive elements play important roles in various scientific, medical, and industrial applications.
Astatine, the always radioactive one.
Fluorine has probable a natural radioactive isotope (F-18) but only as traces.Chlorine has a natural radioactive isotope (Cl-36) but only as traces.Bromine hasn't natural radioactive isotopes.Iodine has probable a natural radioactive isotope (I-125) but only as traces.Astatine has only radioactive isotopes.
Most of them do. Radon probably does not.
Chlorine belongs to the halogen family of elements.