Bromine (Br) is a liquid
Iodine (I) is a solid
The radioactive element is composed of unstable nuclei that try to reach stability through emitting nuclear radiations as alpha, beta, and gamma nuclear radiations.
Astatine wouldn't form salt as readily as other elements in Group 17. Astatine is a radioactive metalloid. Other elements in Group 17 are nonmetals.
The heaviest element that is highly radioactive is Ununoctium, which has an atomic number of 118.
Astatine is an element with the symbol At.
A disintegration series is the pathway of a radioactively unstable element into a stable element. The pathway alters the atomic number of the element and converts the element into another element. A common one is the uranium disintegration series.
The element with the symbol At is Astatine. Astatine is a Group 17(7) Halogen and is radioactive. It has 85 electrons in 6 shells, with 7 electrons in the outer shell.
The element with the atomic number 85 is Astatine (At). Astatine is a Radioactive Halogen in Group 17(7) of the Periodic Table. Astatine has 85 electrons in 6 shells with 7 electrons in the outer shell. Astatine is the third radioactive element on the Periodic Table.
There is no group specified so it is not possible to be sure about this answer but all isotopes of promethium are radioactive.
Astatine is a halogen; position in the periodic table of Mendeleev: group 17, period 6.
Chlorine is a halogen, a group that includes fluorine, chlorine, bromine, iodine, and the rare radioactive element astatine. (And possibly the newly isolated element ununseptium.)
Polonium is the element in group 16 that has unstable isotopes. It is a radioactive element with no stable isotopes.
For example francium in the group 1.
The element in the Periodic Table that has 85 protons is Astatine. This element is in the Halogen Family (Group 17 in the Table). This group includes the elements Fluorine, Chlorine, Bromine, and Iodine.
The heaviest element in group 16 is Polonium. It has an atomic number of 84 and is a rare, highly radioactive metal.
Uranium is a natural chemical element, situated in the actinides group; uranium is a solid metal, radioactive.
Curium is an artificial element, radioactive, unstable, metal , solid, a member of the actinides group.
The chemical element with atomic number 85 is astatine. It is a rare and highly radioactive element that occurs naturally in trace amounts. Astatine is part of the halogen group on the periodic table.