Roentgenium is an artificial chemical element and is obtained only in very specialized and expensive installations, in rare laboratories in the world.
Roentgenium hasn't practical uses.
Roentgenium has 111 electrons.
Roentgenium is a solid.
Roentgenium has only been produced in microscopic amounts, so it is currently unknown.
Roentgenium has two electrons on the outer shell.
Roentgenium is an artificial element, obtained via nuclear reactions in particle accelerators. Roentgenium hasn't practical uses.
Roentgenium has no uses.
Any food has roentgenium.
Roentgenium has no uses.
Roentgenium has no uses.
Roentgenium is a solid metal.
Any roentgenium exist in foods.
Roentgenium is a transition metal.
Roentgenium is not a commercial product.
Roentgenium hasn't practical uses.
Roentgenium has 111 electrons.
Roentgenium is a solid.