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<tr align="center">
<th>1</th>
<td style="background: rgb(160, 255, 160);"><small>hydrogenidrogeno</small><br>1<br> <big>[[w:hydrogenidrogeno|H]]</big><br> <small>1.00794(7)</small></td>
<td colspan="17"> </td>
<td style="background: rgb(192, 255, 255);"><small>heliumelio</small><br>2<br> <big>[[w:heliumelio|He]]</big><br> <small>4.002602(2)</small></td>
</tr>
<tr align="center">
<th>2</th>
<td style="background: rgb(255, 102, 102);"><small>lithiumlitio</small><br>3<br> <big>[[w:lithiumlitio|Li]]</big><br> <small>6,941(2)</small></td>
<td style="background: rgb(255, 222, 173);"><small>berylliumberillio</small><br>4<br> <big>[[w:berylliumberillio|Be]]</big><br> <small>9.012182(3)</small></td>
<td style="vertical-align: top;" colspan="11"> </td>
<td style="background: rgb(204, 204, 153);"><small>boronboro</small><br>5<br> <big>[[w:boronboro|B]]</big><br> <small>10.881(7)</small></td>
<td style="background: rgb(160, 255, 160);"><small>carboncarbonio</small><br>6<br> <big>[[w:carboncarbonio|C]]</big><br> <small>12.0107(8)</small></td>
<td style="background: rgb(160, 255, 160);"><small>nitrogenazoto</small><br>7<br> <big>[[w:nitrogenazoto|N]]</big><br> <small>14.00674(7)</small></td>
<td style="background: rgb(160, 255, 160);"><small>oxygenossigeno</small><br>8<br> <big>[[w:oxygenossigeno|O]]</big><br> <small>15.9994(3)</small></td>
<td style="background: rgb(255, 255, 153);"><small>fluorinefluoro</small><br>9<br> <big>[[w:fluorinefluoro|F]]</big><br> <small>18.9984032(5)</small></td>
<td style="background: rgb(192, 255, 255);"><small>neon</small><br>10<br> <big>[[w:neon|Ne]]</big><br> <small>20.1797(6)</small></td>
</tr>
<tr align="center">
<th>3</th>
<td style="background: rgb(255, 102, 102);"><small>sodiumsodio</small><br>11<br> <big>[[w:sodiumsodio|Na]]</big><br> <small>22.989770(2)</small></td>
<td style="background: rgb(255, 222, 173);"><small>magnesiummagnesio</small><br>12<br> <big>[[w:magnesiummagnesio|Mg]]</big><br> <small>24.3050(6)</small></td>
<td style="vertical-align: top;" colspan="11"> </td>
<td style="background: rgb(204, 204, 204);"><small>aluminumalluminio</small><br>13<br> <big>[[w:Aluminumalluminio|Al]]</big><br> <small>26.981538(2)</small></td>
<td style="background: rgb(204, 204, 153);"><small>siliconsilicio</small><br>14<br> <big>[[w:siliconsilicio|Si]]</big><br> <small>28.0855(3)</small></td>
<td style="background: rgb(160, 255, 160);"><small>phosphorusfosforo</small><br>15<br> <big>[[w:phosphorusfosforo|P]]</big><br> <small>30.973761(2)</small></td>
<td style="background: rgb(160, 255, 160);"><small>sulfurzolfo</small><br>16<br> <big>[[w:sulfurzolfo|S]]</big><br> <small>32.066(6)</small></td>
<td style="background: rgb(255, 255, 153);"><small>chlorinecloro</small><br>17<br> <big>[[w:chlorinecloro|Cl]]</big><br> <small>35.4527(9)</small></td>
<td style="background: rgb(192, 255, 255);"><small>argonargo</small><br>18<br> <big>[[w:argonargo|Ar]]</big><br> <small>39.948(1)</small></td>
</tr>
<tr align="center">
<th>4</th>
<td style="background: rgb(255, 102, 102);"><small>potassiumpotassio</small><br>19<br> <big>[[w:potassiumpotassio|K]]</big><br> <small>39.0983(1)</small></td>
<td style="background: rgb(255, 222, 173);"><small>calciumcalcio</small><br>20<br> <big>[[w:calciumcalcio|Ca]]</big><br> <small>40.078(4)</small></td>
<td style="vertical-align: top;"><br> </td>
<td style="background: rgb(255, 192, 192);"><small>scandiumscandio</small><br>21<br> <big>[[w:scandiumscandio|Sc]]</big><br> <small>44.955910(8)</small></td>
<td style="background: rgb(255, 192, 192);"><small>titaniumtitanio</small><br>22<br> <big>[[w:titaniumtitanio|Ti]]</big><br> <small>47.867(1)</small></td>
<td style="background: rgb(255, 192, 192);"><small>vanadiumvanadio</small><br>23<br> <big>[[w:vanadiumvanadio|V]]</big><br> <small>50.9415(1)</small></td>
<td style="background: rgb(255, 192, 192);"><small>chromiumcromo</small><br>24<br> <big>[[w:chromiumcromo|Cr]]</big><br> <small>51.9961(6)</small></td>
<td style="background: rgb(255, 192, 192);"><small>manganese</small><br>25<br> <big>[[w:manganese|Mn]]</big><br> <small>54.938049(9)</small></td>
<td style="background: rgb(255, 192, 192);"><small>ironferro</small><br>26<br> <big>[[w:ironferro|Fe]]</big><br> <small>55.845(2)</small></td>
<td style="background: rgb(255, 192, 192);"><small>cobaltcobalto</small><br>27<br> <big>[[w:cobaltcobalto|Co]]</big><br> <small>58.933200(9)</small></td>
<td style="background: rgb(255, 192, 192);"><small>nickelnichel</small><br>28<br> <big>[[w:nickelnichel|Ni]]</big><br> <small>58.6934(2)</small></td>
<td style="background: rgb(255, 192, 192);"><small>copperrame</small><br>29<br> <big>[[w:copperrame|Cu]]</big><br> <small>63.546(3)</small></td>
<td style="background: rgb(255, 192, 192);"><small>zinczinco</small><br>30<br> <big>[[w:zinczinco|Zn]]</big><br> <small>65.39(2)</small></td>
<td style="background: rgb(204, 204, 204);"><small>galliumgallio</small><br>31<br> <big>[[w:galliumgallio|Ga]]</big><br> <small>69.723(1)</small></td>
<td style="background: rgb(204, 204, 153);"><small>germaniumgermanio</small><br>32<br> <big>[[w:germaniumgermanio|Ge]]</big><br> <small>72.61(2)</small></td>
<td style="background: rgb(204, 204, 153);"><small>arsenicarsenico</small><br>33<br> <big>[[w:arsenicarsenico|As]]</big><br> <small>74.92160(2)</small></td>
<td style="background: rgb(160, 255, 160);"><small>seleniumselenio</small><br>34<br> <big>[[w:seleniumselenio|Se]]</big><br> <small>78.96(3)</small></td>
<td style="background: rgb(255, 255, 153);"><small>brominebromo</small><br>35<br> <big>[[w:brominebromo|Br]]</big><br> <small>79.904(1)</small></td>
<td style="background: rgb(192, 255, 255);"><small>kryptoncripto</small><br>36<br> <big>[[w:kryptoncripto|Kr]]</big><br> <small>83.80(1)</small></td>
</tr>
<tr align="center">
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