<table class="wikitable">
<tr>
<th>number</th>
<th>symbol</th>
<th>name</th>
<th>21st</th>
<th>22nd</th>
<th>23rd</th>
<th>24th</th>
<th>25th</th>
<th>26th</th>
<th>27th</th>
<th>28th</th>
<th>29th</th>
<th>30th</th>
</tr>
<tr>
<td>21</td>
<td>Sc</td>
<td><a href="//en.wikipedia.org/wiki/Scandium" title="Scandium">scandium</a></td>
<td>582163</td>
</tr>
<tr>
<td>22</td>
<td>Ti</td>
<td><a href="//en.wikipedia.org/wiki/Titanium" title="Titanium">titanium</a></td>
<td>602930</td>
<td>639294</td>
</tr>
<tr>
<t