Yttrium Element Cube Hazmat iridium is considered to be

iridium is considered to be the second-densest naturally occurring metal (after osmium)

Although several elements within the Periodic Table are dangerous

By the end of the day

which is why it is sometimes used to make mirror surfaces

Rhenium was the last stable element to be discovered and gets its name from the river Rhine in Europe

Yttrium Element Cube Hazmat iridium is considered to beYttrium is a chemical element with the symbol Y and atomic number 39. It is a silvery metallic transition metal chemically similar to the lanthanides and has often been classified as a "rare earth element". Yttrium is almost always found in combination with lanthanide elements in rare earth minerals, and is never found in nature as a free element. 89 Y is the only stable isotope, and the only isotope found in the Earth's crust.