americium
n. radioactive chemical element (Chemistry) | ||||
Search Dictionary:
Americium definition was found in categories: Language, Idioms & Slang(1) Science & Technology(2) Entertainment & Music(1) Medicine(1) Encyclopedia(1)
Americium Definition from Language, Idioms & Slang Dictionaries & Glossaries
| WordNet 2.0 |
americium
Noun
1. a radioactive transuranic metallic element; discovered by bombarding uranium with helium atoms
(synonym) Am, atomic number 95
(hypernym) metallic element, metal
Noun
1. a radioactive transuranic metallic element; discovered by bombarding uranium with helium atoms
(synonym) Am, atomic number 95
(hypernym) metallic element, metal
Americium Definition from Science & Technology Dictionaries & Glossaries
| Mineralogy Database |
Americium (Am)
Atomic Mass : 243
Atomic Number : 95
Name Origins : Named after the American Continent
Year Discovered : 1944
Discovery Credits : Discovered by G. T. Seaborg, R. A. James, I. O. Morgan, and A. Ghiorso at Chicago, IL., USA.
More Details
Atomic Mass : 243
Atomic Number : 95
Name Origins : Named after the American Continent
Year Discovered : 1944
Discovery Credits : Discovered by G. T. Seaborg, R. A. James, I. O. Morgan, and A. Ghiorso at Chicago, IL., USA.
More Details
| Chemistry of the Elements |
Americium
Name: americium
Symbol: Am
Atomic number: 95
Atomic weight: [ 243 ]
Group in periodic table:
Group name: Actinoid
Period in periodic table: 7 (actinoid)
Block in periodic table: f-block
CAS registry ID: 7440-35-9
The lustre of freshly prepared americium metal is whiter and more silvery than plutonium or neptunium prepared in the same manner.
Americium appears to be more malleable than uranium or neptunium and americium tarnishes slowly in dry air at room temperature. Americium is a radioactive rare earth metal which must be handled with care to avoid contact, since it is a heavy a and g emitter. It is named after America. The a activity of 241Am is about three times that of radium. Americium is available to qualified users in the UK and in the USA.
Name: americium
Symbol: Am
Atomic number: 95
Atomic weight: [ 243 ]
Group in periodic table:
Group name: Actinoid
Period in periodic table: 7 (actinoid)
Block in periodic table: f-block
CAS registry ID: 7440-35-9
The lustre of freshly prepared americium metal is whiter and more silvery than plutonium or neptunium prepared in the same manner.
Americium appears to be more malleable than uranium or neptunium and americium tarnishes slowly in dry air at room temperature. Americium is a radioactive rare earth metal which must be handled with care to avoid contact, since it is a heavy a and g emitter. It is named after America. The a activity of 241Am is about three times that of radium. Americium is available to qualified users in the UK and in the USA.
Americium Definition from Entertainment & Music Dictionaries & Glossaries
| English to Federation-Standard Golic Vulcan |
Americium
wuh-tukh
wuh-tukh
Americium Definition from Medicine Dictionaries & Glossaries
| CDC Radiological Terms |
Americium (Am)
a silvery metal; it is a man-made element whose isotopes Am-237 through Am-246 are all radioactive. Am-241 is formed spontaneously by the beta decay of plutonium-241. Trace quantities of americium are widely used in smoke detectors, and as neutron sources in neutron moisture gauges.
a silvery metal; it is a man-made element whose isotopes Am-237 through Am-246 are all radioactive. Am-241 is formed spontaneously by the beta decay of plutonium-241. Trace quantities of americium are widely used in smoke detectors, and as neutron sources in neutron moisture gauges.
Americium Definition from Encyclopedia Dictionaries & Glossaries
| Wikipedia English - The Free Encyclopedia |
Americium
Americium (IPA: ) is a synthetic element that has the symbol Am and atomic number 95. A radioactive metallic element, americium is an actinide that was obtained by bombarding plutonium with neutrons and was the fourth transuranic element to be discovered. It was named for the Americas, by analogy with europium.
| See more at Wikipedia.org... |