Table of Contents
What is francium density?
300 K (27 °C, 81 °F) Boiling point. 950 K (677 °C, 1251 °F) Density (near r.t. ) 2.48 g/cm3 (estimated)
What is the density of americium?
13.67 g.cm-3
Chemical properties of americium – Health effects of americium – Environmental effects of americium
| Atomic number | 95 |
|---|---|
| Density | 13.67 g.cm-3 at 20°C |
| Melting point | 994 °C |
| Boiling point | 2607 °C |
| Vanderwaals radius | unknown |
Does curium occur naturally?
Curium is a member of a group of elements, the transuranic elements, that – with the exception of plutonium and neptunium – do not occur naturally on Earth. Curium is a hard, brittle, silvery radioactive metal that tarnishes slowly and which can only be produced in nuclear reactors.
Does americium occur naturally?
Americium occurs naturally in uranium minerals, but only in trace amounts. The main source of the element is the neutron bombardment of plutonium in nuclear reactors.
How many isotopes does francium have?
33
There are 33 recognized isotopes of francium. Fr (Ac, K), a daughter of 227Ac, is the longest lived isotope with a half-life of 22 minutes. It is also the only known isotope of francium that occurs in nature. All 33 of francium’s isotopes are highly unstable.
Does lead have a high density?
Lead’s high density, low melting point, ductility and relative inertness to oxidation make it useful.
What is the base of americium?
Americium is a synthetic radioactive chemical element with the symbol Am and atomic number 95. It is a transuranic member of the actinide series, in the periodic table located under the lanthanide element europium, and thus by analogy was named after the Americas.
Is curium rare or common?
Curium is a radioactive rare earth metal. The most stable isotope is 247Cm which has a half-life of 16 million years. Curium is probably present in uranium ores.
What is the density of curium?
13.51 g.cm-3
Chemical properties of curium – Health effects of curium – Environmental effects of curium
| Atomic number | 96 |
|---|---|
| Density | 13.51 g.cm-3 at 20°C |
| Melting point | 1340 °C |
| Boiling point | unknown |
| Vanderwaals radius | unknown |
What are the dangers of francium?
Although humans need many elements to be healthy, francium isn’t one of them. In fact, francium is actually dangerous for humans because it is radioactive. The particles that radioactive elements give off can damage our bodies and can cause diseases or cancer.
Does Americium have a high density?
When freshly prepared, it has a silvery-white metallic lustre, but then slowly tarnishes in air. With a density of 12 g/cm 3, americium is less dense than both curium (13.52 g/cm 3) and plutonium (19.8 g/cm 3); but has a higher density than europium (5.264 g/cm 3)—mostly because of its higher atomic mass.
What are some facts about americium?
Facts About Americium. A disc of americium viewed under a microscope. Americium, a silvery-white, synthetic element, is created during nuclear reactions of heavy elements. The element and its isotopes have very few but important uses including smoke detectors found in nearly all buildings and the potential to power future space missions.
How much americium is in smoke detectors?
Most household smoke detectors contain a small amount of radioactive material, usually only 1 Curie of Americium 241 (about 3 micrograms, a minuscule amount).
Is the americium, in smoke detectors, dangerous?
The americium-241 in ionizing smoke detectors poses a potential environmental hazard, albeit a very small one. Disposal regulations and recommendations for smoke detectors vary from region to region. The amount of radioactive material contained in ionizing smoke detectors is very small and thus doesn’t represent a significant radiological hazard.