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The '''Rare earth elements''' are the fifteen chemical elements in the [[Lanthanum|lanthanide]] series (atomic numbers 57 to 71) together with [[scandium]] (21) and [[yttrium]] (39).<ref>https://www.geolsoc.org.uk/~/media/shared/documents/policy/Rare%20Earth%20Elements%20briefing%20note%20final%20%20%20new%20format.pdf</ref>
==References==
{{reflist}}
[[Category:Elements]]
==References==
{{reflist}}
[[Category:Elements]]