This element is ruthenium (Ru), atomic number 44.
Ruthenium.
Technetium is the chemical element with atomic number 43 and symbol Tc.
Technetium is an artificial chemical element.
Technetium is a chemical element, solid, metal, radioactive. It was predicted because in the periodic table place with the atomic number 43 was unoccupied.
Technetium is an artificial chemical element.
Technetium is an artificial chemical element, a solid metal.
Technetium is a chemical element that exists in a solid state at room temperature. It has a silvery-gray appearance and is a transition metal with atomic number 43 in the periodic table.
Technetium is an artificial chemical element.
Technetium. Now technetium is considered also a natural chemical element.
Technetium is a man made chemical element.
Tc stands for the element technetium. Technetium is a silvery-gray metal and it is the first element on the periodic table that does not have any stable isotopes.
All isotopes of technetium are radioactive. Technetium is found only in trace quantities in nature, and then usually only in certain ores where it is a product of radioactive decay. All of the technetium used is synthetic.