Summary of Sales Tax on Shipping in Arizona. Many states are confusing on shipping or even simply donât take into account, making you play guessing games. Arizona, though, is nice and straightforward. If the shipping costs are separately stated on the invoice, you shouldnât have to collect.
Astatine is a semi-metallic chemical element classified among the halogens in the periodic table of elements.Periodic table of the chemical elements is a tabular display of the elements in order of atomic number, in which elements with similar properties are grouped in columns.owever, the halogens also include Astatine (At). Astatine is the rarest naturally occurring element, with less than 30 grams estimated to be contained in the entire Earthâs crust.
Uses. There are currently no uses for astatine outside of research. The half-life of the most stable isotope is only 8 hours, and only tiny amounts have ever been produced. A mass spectrometer has been used to confirm that astatine behaves chemically like other halogens, particularly iodine.statine is the least reactive of the halogens but just like the rest of them it combines with hydrogen to make hydrogen astatide which dissolves in water to make hydroastatic acid; it is just like a weaker version of hydrochloric acid.