Astatine is a radioactive chemical element. Its atomic number is 85 and its chemical symbol is At. It is heaviest halogin created through radioactive decay in nature. It is found in small amounts. It was discovered in 1940 by the concerted efforts of Dale R. Carson an American physicist, K.R. MacKenzie an American physicist and Emilio Segre an Italian physicist. Mit niedrigen Preisen und hoher Qualität sind die perfekten Replik Uhren den Besitz wert!
AAA perfect cheap Rolex replica watches at affordable prices can be found from this website. Emilio Segre won the Noble Prize in 1959 for his great achievements in the field of Physics.