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The Encyclopedia Britannica calls it the most important of the actinoids |
uranium
|
$1,600 |
DJ |
SCIENCE FOR "U" |
2024-06-13 |
#9124 |
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Around 1911 Arthur Holmes postulated Earth's age could be estimated by measuring the decay of this radioactive element into lead |
uranium
|
$1,600 |
DJ |
SCIENCE |
2022-05-31 |
#8652 |
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It was an atom of this element that Otto Hahn split in 1938 |
uranium
|
$800 |
DJ |
YOU BETTER KNOW SOME SCIENCE |
2004-01-29 |
#4469 |
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Named after a planet, its atomic number is 92 |
Uranium
|
$1,600 |
DJ |
SCIENCE CLASS |
2002-01-21 |
#4006 |
|
In 1911 Arthur Holmes used the decay of this element to lead to measure the age of the Earth |
Uranium
|
$500 |
J |
EARTH SCIENCES |
2001-06-19 |
#3882 |
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It was an atom of this element that Otto Hahn split in 1938 |
Uranium
|
$400 |
J |
1930S SCIENCE |
1998-09-25 |
#3230 |
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This element has 3 natural isotopes: mass numbers 234, 235 & 238 |
uranium
|
$400 |
J |
SCIENCE |
1994-04-18 |
#2226 |
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Heaviest element found in nature, named for a planet |
uranium
|
$200 |
DJ |
SCIENCE |
1985-02-04 |
#106 |