Who discovered the element actinium?
André-Louis DebierneActinium / DiscovererAndré-Louis Debierne was a French chemist. He is often considered the discoverer of the element actinium, though H. W. Kirby disputes this and awards credit instead to German chemist Friedrich Oskar Giesel.
Debierne studied at the elite École supérieure de physique et de chimie industrielles de la ville de Paris. Wikipedia
Who named actinium?
Debierne named the element after the Greek word aktinos (“ray”). A ton of pitchblende ore contains about 0.15 mg of actinium.
What type of element is actinium?
radioactive
Actinium is a soft, silvery-white, radioactive, metallic element.
Why is actinium element important?
Actinium is a very powerful source of alpha rays, but is rarely used outside research. Actinium has no known biological role. It is toxic due to its radioactivity. Actinium used for research purposes is made by the neutron bombardment of radium-226.
What are 3 uses for actinium?
Actinium-225 is used in medicine to produce Bi-213 in a reusable generator or can be used alone as an agent for radio-immunotherapy. It is found only in traces in uranium ores as 227-Ac, an α and β emitter with a half-life of 21.773 years. One ton of uranium ore contains about a tenth of a gram of actinium.
Is radium more powerful than uranium?
A mixture of radium and beryllium will emit neutrons and is used as a neutron source. Radium is used to produce radon, a radioactive gas used to treat some types of cancer. A single gram of radium-226 will produce 0.000l milliliters of radon a day. Radium is about one million times more active than uranium.
What are elements 89 103 called?
actinide element
actinoid element, also called actinide element, any of a series of 15 consecutive chemical elements in the periodic table from actinium to lawrencium (atomic numbers 89–103). As a group, they are significant largely because of their radioactivity.
What is 104 on the periodic table?
rutherfordium
IUPAC decided element 104 would be called rutherfordium….
| Discovery date | 1964 |
|---|---|
| Origin of the name | Rutherfordium is named in honour of New Zealand Chemist Ernest Rutherford, one of the first to explain the structure of atoms. |
| Allotropes |
What is the 2nd rarest element on Earth?
| Astatine | |
|---|---|
| Pronunciation | /ˈæstətiːn, -tɪn/ (ASS-tə-teen, -tin) |
| Appearance | unknown, probably metallic |
| Mass number | [210] |
| Astatine in the periodic table |
What is the second rarest element?
Francium
Characteristics: Francium is a heavy, unstable, radioactive metal with a maximum half-life of only 22 minutes. It has a low melting point (27 oC, 81 oF) and, if enough of it could be accumulated, it would be liquid in a warm room. Francium is the second rarest element in the Earth’s crust, next to astatine.