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.
Yes, it is.
All isotopes of astatine are radioactive. Only traces of a single isotope are found in nature.
My science teacher says that Astatine is a nonmetal.
No it is a halogen.
Astatine is a solid nonmetal.
it's a non-metal, is what wikepedia says
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.
non metal
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!
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
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.
It is diatomic. Being radioactive, and its most stable isotope having a half life of 8.3 hours, it is usually not considered.
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.
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.