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Coprecipitation experiments performed in 2021 studied rutherfordium's behaviour in basic solution containing ammonia or sodium hydroxide, using zirconium, hafnium, and thorium as comparisons. It was found that rutherfordium does not strongly coordinate with ammonia and instead coprecipitates out as a hydroxide, which is probably Rf(OH) 4. [84]
rutherfordium-263: 15 900 lead-195 ~15 ~900 polonium-201: 15.3 920 10 3 seconds (kiloseconds) ... This page was last edited on 9 February 2025, at 08:28 (UTC).
However, the last step in this chain was uncertain. After observing the five alpha decay events that generate dubnium-268, spontaneous fission events were observed with a long half-life. It is unclear whether these events were due to direct spontaneous fission of 268 Db, or 268 Db produced electron capture events with long half-lives to ...
A synthetic element is one of 24 known chemical elements that do not occur naturally on Earth: they have been created by human manipulation of fundamental particles in a nuclear reactor, a particle accelerator, or the explosion of an atomic bomb; thus, they are called "synthetic", "artificial", or "man-made".
Despite these unsuccessful attempts to observe long-lived superheavy nuclei, [34] new superheavy elements were synthesized every few years in laboratories through light-ion bombardment and cold fusion [k] reactions; rutherfordium, the first transactinide, was discovered in 1969, and copernicium, eight protons closer to the island of stability ...
The long-standing dispute was resolved in 1993 by an official investigation of the ... the names rutherfordium and ... This page was last edited on 26 ...
In contrast, in 0.1 M nitric acid, seaborgium does not elute, unlike molybdenum and tungsten, indicating that the hydrolysis of [Sg(H 2 O) 6] 6+ only proceeds as far as the cationic complex [Sg(OH) 4 (H 2 O)] 2+ or [SgO(OH) 3 (H 2 O) 2] +, while that of molybdenum and tungsten proceed to neutral [MO 2 (OH) 2].
Main isotopes of rutherfordium; Main isotopes [1] Decay; abundance half-life (t 1/2) mode product; 261 Rf ... This page was last edited on 13 June 2023, at 01:56 ...