Which transition metal is known for having a low density?

Scandium is known for possessing a relatively low density among transition metals. It has an atomic number of 21 and is often characterized by its lightweight properties. The density of scandium is about 2.985 g/cm³, which is significantly lower than many other transition metals. This low density makes scandium useful in various applications, including aerospace industries, where lightweight materials are essential.

Nickel, titanium, and zirconium, on the other hand, have higher densities, with nickel around 8.9 g/cm³, titanium approximately 4.54 g/cm³, and zirconium about 6.52 g/cm³. These densities are considerably greater than that of scandium, which is why scandium is prominently recognized for its low density among transition metals.