Linked from
The 8 pages that link to Osmium, each with the reason it gives.
TungstenCompared with: Osmium is denser than tungsten, while tungsten has the higher melting point.
Osmium tetroxideNarrower topic: Osmium tetroxide is the volatile oxide of this element.
Group 8 elementBroader topic: Osmium is a stable heavy member with unusually high density.
HassiumCompared with: Osmium provides a stable group 8 comparison for hassium’s predicted chemistry.