Friday, April 30, 2021

Wednesday, April 28, 2021

WebElements Periodic Table » Selenium » Properties Of Free Atoms

Electron configuration. Selenium—from Ancient Greek σελήνη (selḗnē) "Moon" - was discovered in 1817 by Jöns Jacob Berzelius, who noted the similarity of the new element to the previously discovered tellurium (named for the Earth).The selenium.webdriver...