Polonium is a rare, silvery-gray, radioactive, low-melting metalloid. Polonium readily reacts with dilute acids, but only slightly with alkalis. All of its isotopes are radioactive. 210Po emits a blue glow, as the air around it is excited by the decay products. 1 gram of Po emits as ...
Join the conversation Polonium • Metalloid Symbol:Po Date of discovery:1898 Name origin:Poland Appearance:unknown Discoverer:Marie and Pierre Curie Obtained from:pitchblende, radium Melting point:527 K Boiling point:1235 K Density[kg/m3]:9196 ...
8、Polonium is a highly radioactive element and a metalloid.钋是高放射性的元素,金属。 9、Polonium and radium were important discoveries.钋和镭都是重要的发现。 10、They discovered polonium and radium and were given the first Nobel Prize for physics in 1903.他们发现了钋和镭和被给予了第一个1903...
have properties between those of metals and nonmetals. Important metalloids include boron, silicon, germanium, arsenic, antimony, and tellurium. Selenium, although less commonly included in themetalloidgroup, is included in this chapter.Poloniumandastatineare inconsistently includes in the metalloid group...
Polonium (pronunciation: peh-LOW-nee-em) [3] is a rare, highly radioactive metalloid, classified as a Chalcogen [5] and represented by the chemical symbol Po [1, 2]. It has more than 25 isotopes, out of which Polonium-208, Polonium-209, and Polonium-210 are relatively long-lived [4...