Bohrium Cube Element Mini Museum but discolors when exposed to

but discolors when exposed to air

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

Praseodymium's atomic number is 59 and its symbol is Pr

Wright Flyer Fabric Flyer Display

Bohrium Cube Element Mini Museum but discolors when exposed toBohrium'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