Andre Louis Debierne discovered actinium in 1899. Friedrich Oskar Giesel independently discovered it in 1902 but Debierne is largely credited with the discovery.
When did he discovered? Do you mean what? He discovered Yellow Fever was transmitted by mosquitoes. And if you mean when did he discover it, then the answer you are looking for is he led a research team that discovered this in 1900.
J.J.Thomson has discovered the electron in 1897
It is not known where exactly in England sodium was discovered. It was discovered by Sir Humphrey Davy in 1807.
Alexander Fleming discovered penicillin in 1928
cytoplasm/protoplasm was discovered by Robert brown
Actinium was discovered in 1899 by Andre Louis Debierne and independently by Friedrich Oskar Giesel in 1902.
Andre Louis Debierne discovered actinium in 1899. Friedrich Oskar Giesel independently discovered it in 1902 but Debierne is largely credited with the discovery.
Andre Louis Debierne (France) discovered actinium in 1899. Friedrich Oskar Giesel (Germany) independently discovered it in 1902 but Debierne is largely credited with the discovery.
Andre Louis Debierne discovered actinium in 1899. Friedrich Oskar Giesel independently discovered it in 1902 but Debierne is largely credited with the discovery.
Andre Louis Debierne (France) discovered actinium in 1899. Friedrich Oskar Giesel (Germany) independently discovered it in 1902 but Debierne is largely credited with the discovery.
Actinium was discovered in residues from the uranium and radium extraction from ores. Andre Louis Debierne (France) discovered actinium in 1899. Friedrich Oskar Giesel (Germany) independently discovered it in 1902 but Debierne is largely credited with the discovery.
Andre Louis Debierne (France) discovered actinium in 1899. Friedrich Oskar Giesel (Germany) independently discovered it in 1902 but Debierne is largely credited with this discovery.
Actinium was discovered in residues from the uranium and radium extraction from ores. The concentration of Ac is extremely low. But actinium can be prepared and artificially, as a result of nuclear reactions. Andre Louis Debierne (France) discovered actinium in 1899. Friedrich Oskar Giesel (Germany) independently discovered it in 1902 but Debierne is largely credited with the discovery.
Andre Louis Debierne - 1899 Fritz Giesel - 1902
It was discovered in France by the French chemist André-Louis Debierne.
Actinium was named after the Greek word "aktinos" which means "ray" or "beam" due to its high radioactivity. The element was discovered by Friedrich Oskar Giesel and independently by André-Louis Debierne in 1899.
The first actinide element is actinium, which has the atomic number 89. It is a radioactive element that was discovered in 1899 by André-Louis Debierne. Actinium is commonly used in medicine for cancer treatment and as a neutron source in scientific research.