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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 25 November 2024, at 19:31 (UTC).
The last element of the group, rutherfordium, does not occur naturally and had to be made by synthesis. The first reported detection was by a team at the Joint Institute for Nuclear Research (JINR), which in 1964 claimed to have produced the new element by bombarding a plutonium -242 target with neon -22 ions, although this was later put into ...
rutherfordium, Rf, named after Ernest Rutherford, who was responsible for the concept of the atomic nucleus (1969). This discovery was also claimed by JINR, led principally by Georgy Flyorov: they named the element kurchatovium (Ku), after Igor Kurchatov. IUPAC concluded that credit should be shared, and adopted the LBNL name rutherfordium. 105.
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 ...
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 ...
The next six elements on the periodic table are expected to be the last main-group elements in their period, [13] and are likely to be similar to the 5p elements indium through xenon. [19] In elements 167 to 172, the 9p 1/2 and 8p 3/2 shells will be filled.
Rutherfordium, 104 Rf; Rutherfordium ... This page was last edited on 31 October 2024, at 21:26 (UTC).