Astatine, with the symbol At and the atomic number 85, is usually classified at a metalloid, but this is in dispute. It is sometimes classified as a halogen, and possibly a metal. It is still being studied.
Astatine is a nonmetal and halogen.
Polonium and astatine may or may not be included as metalloids (depends on your periodic table). Overall, polonium is closer to being metal than a metalloid; astatine closer to being non-metal than metalloid
According to Lange, Semi-metals are: boron, silicon, germanium, arsenic, antimony, tellurium, polonium and astatine. Although, polonium and astatine, according to some authors, are not semi-metals. Gallium is a metal (4. period, 13th (IIIa) group).
In 1940, astatine was produced in a lab at the University of California by the three scientists named Carson, Mackenzie, and Segre. This element is classified as a semi-metal and has the atomic number of 85.
Sodium chloride is a compound, not a chemical element.
Astatine is not a good conductor of electricity. This is because it is a non-metal. All non-metals do not conduct electricity, and all metals do. The two exceptions are carbon and silicon, which are non-metals, but conduct electricity well.
Yes. A solid nonmetal of the halogen family.
Astatine is a nonmetal and halogen.
These types of elements are called metalloids. There are a few: Boron, Silicon, Arsenic, Germanium, Antimony, Tellurium, and Astatine. Hope that's what you were looking for!
Astatine (At)
No, Boron (B) is classified as a metalloid, which is an element with propertyies intermediate between metals and nonmetals. Other metalloids are: Silicon, Germanium, Arsenic, Antimony, Tellurium, Polonium and Astatine.
No, the guy before me was wrong, Astatine is a Metalloid and it is used in the Radiotherapy of cancer.
Astatine is a heavy halogen; no similarities with strontium (alkaline earth metal).
No. Astatine is a halogen. The alkaline earth metals are in the column second from the left of the periodic table.
Sodium astatine does not exist, as astatine is a halogen element while sodium is an alkali metal. Sodium is typically silver-white in color, while astatine is expected to have a dark, metallic appearance.
The most reactive non-metal is fluorine. It is often nicknamed the 'Tyrannosaurus Rex' of the elements because of its reactivity. NB . Oxygen ,which we breath, is also a very reactive element. If it wasn't so reactive we would probably die.
Astatine is not a good conductor of heat or electricity. It is a semiconductor, meaning it has properties between those of a metal and an insulator.