neptunium in the Oxford-Paravia Italian Dictionary

Translations for neptunium in the English»Italian Dictionary (Go to Italian»English)

Translations for neptunium in the Italian»English Dictionary (Go to English»Italian)

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neptunium

Monolingual examples (not verified by PONS Editors)

English
A radioactive actinide metal, neptunium is the first transuranic element.
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Ions of neptunium are prone to hydrolysis and formation of coordination compounds.
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This amount declines slowly as the americium decays into neptunium-237, a different transuranic element with a much longer half-life (about 2.14 million years).
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Neptunium dioxide has also been show to contribute to increased decay rates of radioactive metals, an application which is currently being explored.
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With its half-life of 432.2 years, the americium in a smoke detector includes about 3% neptunium after 19 years, and about 5% after 32 years.
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O to various temperature thresholds and further heating will also cause these compounds to exhibit different neptunium allotropes.
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By weight, neptunium-237 discharges are about 5% as great as plutonium discharges and about 0.05% of spent nuclear fuel discharges.
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Examples include gallium, ytterbium, bismuth, mercury and neptunium.
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The element 93 was synthesised in 1940 and named neptunium.
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The relative order of the middle two neptunium ions depends on the ligands and solvents used.
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