Concept: Valence electron

Approaching Sixfold Chemical Bonding: Metal Dimers MM’ Involving Group 4–8 Transition Metals and the Actinides Th–Np. Additive Covalent Radii r6
New covalent radii for extremely short bonds between transition metals and actinides
March 30, 2026
Image Credit: Photo by Mikhail Nilov on Pexels (Source • License)