Ytterbium (element)
鐿 centers on the chemical element ytterbium, a rare-earth metal. The meaning is a single, specific scientific term with no broader conceptual cluster.
鐿 is a modern coined character for the element ytterbium, combining the metal radical 金 with the phonetic component 意 (イ). It follows the standard pattern for chemical element kanji.
The left side 金 (metal) tells you it's a metallic element. The right side 意 (idea/mind) hints at the reading and helps distinguish it from other metal kanji. Together they point to the specific rare-earth metal ytterbium.
For イ, imagine a single letter 'E' stamped on a bar of ytterbium metal: E -> イ, the element's on-reading.