donor impurity state
21Case hardening — or surface hardening is the process of hardening the surface of a metal, often a low carbon steel, by infusing elements into the material s surface, forming a thin layer of a harder alloy. Case hardening is usually done after the part in question …
22Nativity of Jesus in art — Georges de La Tour ca. 1644 The Nativity of Jesus has been a major subject of Christian art since the 4th century. The artistic depictions of the Nativity or birth of Jesus, celebrated at Christmas, are based on the narratives in the Bible, in… …
23Tris(2-aminoethyl)amine — IUPAC name Tris(2 aminoethyl)amine …
24Fullerene — Buckminsterfullerene C60 (left) and carbon nanotubes (right) are two examples of structures in the fullerene family …
25Lead(II) nitrate — Lead(II) nitrate …
26Wolfram(VI)-fluorid — Strukturformel Allgemeines Name Wolfram(VI) fluorid Andere Namen …
