Hassium (108Hs) is a synthetic element, and thus a standard atomic weight cannot be given. Like all synthetic elements, it has no stable isotopes. The...
57 KB (5,281 words) - 14:21, 16 May 2024
Hassium is a synthetic chemical element; it has symbol Hs and atomic number 108. Hassium is highly radioactive: its most stable known isotopes have half-lives...
97 KB (13,940 words) - 16:57, 11 May 2024
This is a list of radioactive nuclides (sometimes also called isotopes), ordered by half-life from shortest to longest, in seconds, minutes, hours, days...
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Unbiunium (redirect from Isotopes of unbiunium)
Should the synthesis of unbiunium isotopes in such a reaction be successful, the resulting nuclei would decay through isotopes of ununennium that could...
36 KB (7,383 words) - 11:04, 15 May 2024
Darmstadtium (redirect from History of darmstadtium)
occurring isotopes. Several radioactive isotopes have been synthesized in the laboratory, either by fusing two atoms or by observing the decay of heavier...
38 KB (7,311 words) - 07:03, 9 May 2024
Roentgenium (redirect from History of roentgenium)
half-life of about 5.1 minutes. The isotopes 280Rg and 281Rg have also been reported to have half-lives over a second. The remaining isotopes have half-lives...
28 KB (6,612 words) - 14:57, 7 May 2024
11 have 5 stable isotopes, 9 have 4 stable isotopes, 5 have 3 stable isotopes, 16 have 2 stable isotopes, and 26 have 1 stable isotope. Additionally, about...
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Unbiquadium (redirect from Isotopes of unbiquadium)
naturally occurring isotopes been found to exist. It is believed that the synthesis of unbiquadium will be far more challenging than that of lighter undiscovered...
32 KB (6,768 words) - 15:38, 19 December 2023
Copernicium (redirect from History of copernicium)
known isotopes are extremely radioactive, and have only been created in a laboratory. The most stable known isotope, copernicium-285, has a half-life of approximately...
48 KB (8,314 words) - 22:47, 13 May 2024
Seaborgium (redirect from History of seaborgium)
repeated alpha decay of the heavier elements hassium, darmstadtium, and flerovium, with the exceptions of the isotopes 263mSg, 264Sg, 265Sg, and 265mSg, which...
41 KB (7,721 words) - 17:23, 11 May 2024
Oganesson (redirect from History of oganesson)
aimed at a mixed-isotope californium target containing 249Cf, 250Cf, and 251Cf, with the aim of producing the heavier oganesson isotopes 295Og and 296Og...
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synthetic element and thus has no stable isotopes. A standard atomic weight cannot be given. The first isotope to be synthesized was either 259Rf in 1966...
56 KB (5,062 words) - 01:16, 15 May 2024
Neon (redirect from History of neon)
on Isotopes Periodic Table—Neon at the U.S. Geological Survey, by Eric Caldwell, posted January 2004, retrieved 10 February 2011 "Neon: Isotopes". Softciências...
32 KB (3,820 words) - 23:19, 6 May 2024
Unbihexium (redirect from Isotopes of unbihexium)
will alpha decay, possibly reaching flerovium and livermorium isotopes, and heavier isotopes will decay by spontaneous fission. This study and a quantum...
35 KB (7,027 words) - 02:04, 5 February 2024
Nobelium (redirect from History of nobelium)
nobelium isotopes mostly continue to have longer half-lives as their mass numbers increase, with a dip in the trend at 257No. The isotopes of nobelium...
39 KB (8,152 words) - 01:12, 8 May 2024
Unbibium (redirect from Isotopes of unbibium)
expected to fall within the range of the island of stability, potentially conferring additional stability on some isotopes, especially 306Ubb which is expected...
37 KB (7,056 words) - 11:04, 15 May 2024
Flerovium (redirect from History of flerovium)
synthesis or through radioactive decay of even heavier elements, and all known isotopes are short-lived. Six isotopes of flerovium are known, ranging in mass...
73 KB (11,996 words) - 21:11, 17 May 2024
Chemical symbol (redirect from List of elements by symbol)
was the temporary symbol for hassium (element 108) which had the temporary name of unniloctium, based on the digits of its atomic number. There are also...
64 KB (2,124 words) - 01:21, 9 May 2024
Nihonium (redirect from History of nihonium)
of 282113 were detected. The aim of this experiment had been to synthesise the isotopes 281113 and 282113 that would fill in the gap between isotopes...
90 KB (13,568 words) - 21:10, 24 April 2024
Astatine (redirect from History of astatine)
all its isotopes have half-lives of 8.1 hours or less, decaying into other astatine isotopes, bismuth, polonium, or radon. Most of its isotopes are very...
80 KB (9,217 words) - 18:53, 12 May 2024
Dubnium (redirect from History of dubnium)
fact that the most stable isotopes are the hardest to synthesize. Elements with a lower atomic number have stable isotopes with a lower neutron–proton...
49 KB (9,158 words) - 04:40, 22 December 2023
synthetic element and so has no stable isotopes. A standard atomic weight cannot be given. The first isotope to be synthesized was 263Sg in 1974. There...
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Chemical element (redirect from History of chemical elements)
has isotopes that are not radioactive, these are termed "stable" isotopes. All of the known stable isotopes occur naturally (see primordial isotope). The...
76 KB (9,881 words) - 18:50, 12 April 2024
Ununennium (redirect from Isotopes of Ununennium)
synthesis of ununennium, as isotopes with half-lives below one microsecond would decay before reaching the detector, and the heavier isotopes cannot be...
42 KB (8,085 words) - 09:47, 15 May 2024
Lawrencium (redirect from History of lawrencium)
isotope, 266Lr, has a half-life of about ten hours and is one of the longest-lived superheavy isotopes known to date. However, shorter-lived isotopes...
40 KB (8,059 words) - 12:54, 4 February 2024
Meitnerium (redirect from History of meitnerium)
occurring isotopes. Several radioactive isotopes have been synthesized in the laboratory, either by fusing two atoms or by observing the decay of heavier...
30 KB (6,778 words) - 07:18, 2 April 2024
Promethium (redirect from History of promethium)
decays to both, the lighter isotopes generally to neodymium via positron decay and electron capture, and the heavier isotopes to samarium via beta decay)...
39 KB (4,703 words) - 03:03, 26 April 2024
Determination of the decay properties of neighboring hassium and seaborgium isotopes near N = 162 provides further strong evidence for this region of relative...
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Superheavy element (category Sets of chemical elements)
of probability of a nuclear reaction, as 2.5 pb. In comparison, the reaction that resulted in hassium discovery, 208Pb + 58Fe, had a cross section of...
45 KB (5,127 words) - 01:34, 12 May 2024
Uranium (redirect from History of uranium)
trace isotopes 237U and 239U exclusively undergo beta decay, with respective half-lives of 6.752 days and 23.45 minutes. In total, 28 isotopes of uranium...
110 KB (12,403 words) - 09:40, 16 April 2024