periodic table

periodic table   Dan periodic table of 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

ตารางธาตุ : Periodic Table of the Elements  Short videos about every element on the periodic table, plus other cool experiments and chemistry stuff

ม้า แข่ง เมือง ไทย The periodic table An 18-column by seven-row grid of the elements The chemical elements The periodic table contains seven periods 5 In each period, the elements' atomic numbers increase from