As a result, the company officially opened the mine on 27 March 2013 while simultaneously handing over new houses to 246 families who were relocated from Segorong to Praktiseer and Pidima, also in Burgersfort. The opening of the mine and the completion of the houses has been a long and arduous 12-year journey but finally both the community of Segorong and Imerys South Africa have a good reason to celebrate, says Imerys CEO and chairperson Gilles Michel.
Polonium is a radioactive element discovered in 1898 by scientists Marie and Pierre Curie and named for Marieâs native country, Poland. One of the Earthâs rarest elements, itâs an odorless, silvery-gray soft metal that can be ground into powder.
Thus, its complete electron configuration is 1s2, 2s2 2p6, 3s2 3p6, 4s2 3d10 4p6, 5s2 4d â¦ 10 5p6, 6s2 4f14 5d10 6p4. From this, we see that its highest number shell, which is its valence shell is 6. Thus the valence electron configuration of polonium is 6s2 6p4.ince gallium's atomic number is 31, we know that it has 31 protons and 31 electrons. Thus, its complete electron configuration is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p1. From this, â¦ we see that its highest number shell, which is its valence shell is 4. Thus the valence electron configuration of polonium is 4s2 4p1.