div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imagea href=https:reader042fdocumentsinreader042viewer20220226055b6b1a407f8b9a9f1b8d06fahtml5page1jpg target=_blank img data-url=documentprobable-metals-probable-lanthanides-ree-rare-periodica-degli-electronhtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: probable metals probable Lanthanides REE — Rare … Periodica degli Elementipdf · electron configuration 111 111 11 8 not know state natural synthetic 6 1201 Xe}4f66s2 loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader042fdocumentsinreader042viewer20220226055b6b1a407f8b9a9f1b8d06fahtml5thumbnails1jpg width=140 height=200 adivdiv