Periode-2-element: verschil tussen versies
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Regel 26:
|align=center valign=bottom width=32 style="border-style:solid; border-width:2px; border-color:#888; background: #cccc99" | <font size=1>5</font><br />[[Boor|B]]
|align=center valign=bottom width=32 style="border-style:solid; border-width:2px; border-color:#888; background: #a1ffc3"| <font size=1>6</font><br />[[Carbong|C]]
|align=center valign=bottom width=32 style="border-style:solid; border-width:2px; border-color:#888; background: #
|align=center valign=bottom width=32 style="border-style:solid; border-width:2px; border-color:#888; background: #
|align=center valign=bottom width=32 style="border-style:solid; border-width:2px; border-color:#888; background: #ffff99"| <font size=1>9</font><br />[[Fluor|F]]
|align=center valign=bottom width=32 style="border-style:solid; border-width:2px; border-color:#888; background: #c0ffff"| <font size=1>10</font><br />[[Neon|Ne]]
Regel 34:
{| class="wikitable"
|-
! colspan="3" | [[Chemisch element]] !! [[
|- style="background-color: #ff6666"
| 3 || '''Li''' || [[Lithium]] || Alkalimetoal || [He] 2s<sup>1</sup>
Regel 42:
| 5 || '''B''' || [[Boor]] || Metalloïde || [He] 2s<sup>2</sup> 2p<sup>1</sup>
|- style="background-color: #a1ffc3"
| 6 || '''C''' || [[Carbong]] ||
|- style="background-color: #
| 7 || '''N''' || [[Stikstoffe]] || Niet-metoal || [He] 2s<sup>2</sup> 2p<sup>3</sup>
|- style="background-color: #
| 8 || '''O''' || [[Zeurstoffe]] || Niet-metoal || [He] 2s<sup>2</sup> 2p<sup>4</sup>
|- style="background-color: #ffff99"
Regel 56:
Ofbeeldienge: Electron shell 004 Beryllium - no label.svg|<center>Beryllium
Ofbeeldienge: Electron shell 005 Boron - no label.svg|<center>Boor
Ofbeeldienge:
Ofbeeldienge:
Ofbeeldienge:
Ofbeeldienge: Electron shell 009 Fluorine - no label.svg|<center>Fluor
Ofbeeldienge: Electron shell 010 Neon - no label.svg|<center>Neon
|