The Periodic Table of Elements

element table  The periodic table was developed by grouping elements with similar properties This, together with a later arrangement by atomic weight, led to a repeating When you're reading the periodic table, move across the table from top left to bottom right As you move across the table, the number of protons and the atomic

ตารางธาตุ : Periodic Table of the Elements  PERIODIC TABLE OF THE ELEMENTS 1 2 H He 2 13 14 15 16 17 3 Li 11 Na 4 Be 12 Mg 3 4 5 6 7 8

Interactive periodic table with up-to-date element property data collected from authoritative sources Look up chemical element names, symbols, International License Interactive Periodic Table of the Elements, in Pictures and Words © 2005-2016 Keith Enevoldsen com com