Beryllium (element)
鋍 centers on the element beryllium. It is a specialized character used for this chemical element, with no broader conceptual cluster.
鋍 is a modern character created for the chemical element beryllium, combining the metal radical 金 with the phonetic component 孛. The exact historical development of 孛 is uncertain.
The metal radical 金 on the left hints at a metallic element. The right side 孛 can be seen as a stylized container, as if holding the rare metal beryllium.
For ホツ, imagine a hot piece of beryllium: hot -> ホツ, and the metal 金 is glowing with heat.