Capitalisation of element names is inconsistent. For example, page source (in English-language view) includes:

<td class="element group-10">
	<span>Pd</span><br>
	<a href="//www.wikidata.org/wiki/Q1089">palladium</a><br>
	46
</td><td class="element group-11">
	<span>Ag</span><br>
	<a href="//www.wikidata.org/wiki/Q1090">Silver</a><br>
	47
</td>

Note disparity of capitalisation of "palladium" and "Silver".

This capitalisation does not appear to be inherited from Wikidata labels (Wikidata has lower-case "silver").