Solid Tantalum Polished Density Cube 10mm - 16.65g

Elemental metallic 1 cm elemental cubes These highly polished cubes are great educational tools Story Each cube is highly polished by hand and laser engraved with its periodic info. Size: 10x10x10mm Weight: 16.6g Sample Purity: 99.95% Surface: Mirror Finish Each Tantalum cube is solid and of high purity of 99.95%, highly polished by hand for many hours to reach a mirror finish, and laser engraved with its periodic info. This is an heirloom piece that will last forever. Tantalum is a chemical element with the symbol Ta and atomic number 73. Here are some interesting facts: It was discovered by Anders Gustaf Ekeberg in 1802. It is a rare, hard, blue-gray, lustrous transition metal that is highly corrosion-resistant. It is one of the refractory metals (highly resistant to heat and wear). Its melting point (5463 °F) is exceeded only by tungsten and rhenium. The chemical inertness of tantalum makes it a valuable substance for laboratory equipment, and as a substitute for platinum. Its