Bohrium Cube Element Mini Museum It is hard but brittle

It is hard but brittle

Hafnium is a chemical element with the symbol Hf and atomic number 72

Scandium's atomic number is 21 and its symbol is Sc

but discolors when exposed to air

Armed with a 75 mm or later 76 mm main gun and supported by strong logistical networks

Bohrium Cube Element Mini Museum It is hard but brittleBohrium's atomic number is 107 and its symbol is Bh. As a synthetic element, it can be created in a laboratory but is not found in nature. All known isotopes of bohrium are extremely radioactive; the most stable known isotope is 270Bh with a half life of approximately 61 seconds. It is named after Danish physicist Niels Bohr. Very few properties of bohrium or its compounds have been measured; this is due to its extremely limited and expensive