div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=inicio-2020-10-16-reaccin-ando-con-la-oumica-the-periodicity-of-thehtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: Inicio · 2020 10 16 · Reacción- ando con la Ouímicaé THE PERIODICITY OF THE ELEMENTS —- 3-4 The Elements Hydrogen Lithium Beryllium Boron Carbon Nitrogen Oxygen loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader036vdocumentocomreader036viewer202208140660ac0e6006a93104290abef9html5thumbnails1jpg width=140 height=200 divdiv