Trends in atomic properties of the first transition series

Moving across the first transition series, the gradually filling 3d subshell leaves its fingerprints on every measurable atomic property. The subsections that follow trace those trends one by one — atomic and ionic radii (8.6.1), ionization enthalpy (8.6.2), metallic character (8.6.3), magnetic properties (8.6.4), colour (8.6.5), catalytic properties (8.6.6), the formation of interstitial compounds (8.6.7) and of al …