technetium in A Sentence
1
All isotopes of Technetium must be handled carefully.
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2
Several anionic Technetium halides are known.
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3
Only minute traces of Technetium occur naturally in the Earth's crust.
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4
Metallic Technetium slowly tarnishes in moist air[27] and, in powder form, burns in oxygen.
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5
The first new atom made by man was Technetium, which has 43 protons.
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6
Nearly all Technetium is produced synthetically, and only minute amounts are found in nature.
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7
Technetium also has numerous nuclear isomers, which are isotopes with one or more excited nucleons.
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8
Technetium plays no natural biological role and is not normally found in the human body.
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9
Nearly all Technetium is produced synthetically, and only minute amounts are found in the Earth's crust.
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10
Technetium forms numerous organic complexes, which are relatively well-investigated because of their importance for nuclear medicine.
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11
Since that discovery, there have been many searches in terrestrial materials for natural sources of Technetium.
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12
A Technetium complex[note 3] with an organic ligand(shown in the figure on right) is commonly used in nuclear medicine.
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13
The radioactive nature of Technetium(3 MBq per liter at the concentrations required) makes this corrosion protection impractical in almost all situations.
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14
As noted, the radioactive nature of Technetium(3 MBq/L at the concentrations required) makes this corrosion protection impractical in almost all situations.
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15
One theory holds that the pertechnetate reacts with the steel surface to form a layer of Technetium dioxide which prevents further corrosion;
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16
In 1937, Technetium(specifically the Technetium-97 isotope) became the first predominantly artificial element to be produced, hence its namefrom the Greek τεχνητός, meaning"artificial",
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17
The bond length between Technetium atoms, 303 pm,[42][43] is significantly larger than the distance between two atoms in metallic Technetium(272 pm).
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18
As noted, the radioactive nature of Technetium(3 MBq per liter at the concentrations required) makes this corrosion protection impractical in almost all situations.
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19
The problem was exacerbated by the mutually-enhanced solvent extraction of Technetium and zirconium at the previous stage,[28] and required a process modification.
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20
This complex has a coordination number of 9(meaning that the Tc atom has nine neighbors), which is the highest for a Technetium complex.
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21
This complex has a coordination number of 9(meaning that the Technetium atom has nine neighbors), which is the highest for a Technetium complex.
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22
In 1937, Technetium(specifically the Technetium-97 isotope) became the first predominantly artificial element to be produced, hence its namefrom the Greek τεχνητός, meaning"synthetic or artificial",
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23
Every Technetium atom makes six bonds, and the remaining valence electrons can be saturated by one axial and two bridging ligand halogen atoms such as chlorine or bromine.
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24
Because no isotope of Technetium has a half-life longer than 4.2 million years(Technetium-98), the 1952 detection of Technetium in red giants helped to prove that stars can produce heavier elements.
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25
No isotope of Technetium has a half-life longer than 4.2 million years(98Tc), so its detection in red giants in 1952 helped bolster the theory that stars can produce heavier elements.
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26
Because no isotope of Technetium has a half-life longer than 4.2 million years(Technetium-98), its detection in 1952 in red giants, which are billions of years old, helped bolster the theory that stars can produce heavier elements.
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27
Because no isotope of Technetium has a half-life longer than 4.2 million years(Technetium-98), its detection in red giants in 1952, which are billions of years old, helped bolster the theory that stars can produce heavier elements.
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28
Because no isotope of Technetium has a half-life longer than 4.2 million years(Technetium-98), the 1952 detection of Technetium in red giants, which are billions of years old, helped to prove that stars can produce heavier elements.
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