Periodic table
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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
Groups of the Periodic table · Alkali metals: The alkali metals make up most of Group 1, the table's first column · Alkaline-earth metals: 8 of pentacles ความหมาย 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
ปริมาณ:
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
periodic table Groups of the Periodic table · Alkali metals: The alkali metals make up most of Group 1, the table's first column · Alkaline-earth metals:
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