Here's why:

* Properties: Niobium exhibits the characteristic properties of metals, including:

* High electrical conductivity: It's a good conductor of electricity.

* High thermal conductivity: It conducts heat well.

* Malleability and ductility: It can be hammered into sheets (malleable) and drawn into wires (ductile).

* Luster: It has a shiny, metallic appearance.

* Position on the Periodic Table: Niobium is located in Group 5 of the periodic table, which is the transition metals.