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Isotopen van hassium
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Het chemisch element hassium (Hs), met een atoommassa van ongeveer 269 u, bezit geen stabiele isotopen en wordt dus geclassificeerd als radioactief element. De 12 radio-isotopen zijn onstabiel en hebben een relatief korte halfwaardetijd (de meeste minder dan een seconde).
In de natuur komt geen hassium voor: alle isotopen zijn synthetisch bereid in een laboratorium. De eerste synthetische isotoop was 265Hs, in 1984.
De kortstlevende isotoop van hassium is 264Hs, met een halfwaardetijd van ongeveer 540 microseconden. De langstlevende is 269Hs, met een halfwaardetijd van 9,6 seconden.
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Overzicht
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...![{\displaystyle {{\mathrm {^{~265}_{108}Hs} }{}\mathrel {\longrightarrow } {}{\mathrm {^{~261}_{106}Sg} }{}+{}\,{\vphantom {A}}_{\hphantom {2}}^{\hphantom {4}}{\mkern {-1.5mu}}{\vphantom {A}}_{{\vphantom {2}}{\llap {\smash[{t}]{2}}}}^{{\smash[{t}]{\vphantom {2}}}{\llap {4}}}\mathrm {\alpha } }}](http://wikimedia.org/api/rest_v1/media/math/render/svg/3a11b7aa01d0095efa7e0e2bbcacba8a3bcac29f)
![{\displaystyle {{\mathrm {^{~265m}_{108}Hs} }{}\mathrel {\longrightarrow } {}{\mathrm {^{~261}_{106}Sg} }{}+{}\,{\vphantom {A}}_{\hphantom {2}}^{\hphantom {4}}{\mkern {-1.5mu}}{\vphantom {A}}_{{\vphantom {2}}{\llap {\smash[{t}]{2}}}}^{{\smash[{t}]{\vphantom {2}}}{\llap {4}}}\mathrm {\alpha } }}](http://wikimedia.org/api/rest_v1/media/math/render/svg/739884d65d31a11ea9cb0fab59385c80dfd1f081)
![{\displaystyle {{\mathrm {^{~266}_{108}Hs} }{}\mathrel {\longrightarrow } {}{\mathrm {^{~262}_{106}Sg} }{}+{}\,{\vphantom {A}}_{\hphantom {2}}^{\hphantom {4}}{\mkern {-1.5mu}}{\vphantom {A}}_{{\vphantom {2}}{\llap {\smash[{t}]{2}}}}^{{\smash[{t}]{\vphantom {2}}}{\llap {4}}}\mathrm {\alpha } }}](http://wikimedia.org/api/rest_v1/media/math/render/svg/b3c2f406c3b1b4c18b013e76a2a16abd8d999a36)
![{\displaystyle {{\mathrm {^{~267}_{108}Hs} }{}\mathrel {\longrightarrow } {}{\mathrm {^{~263}_{106}Sg} }{}+{}\,{\vphantom {A}}_{\hphantom {2}}^{\hphantom {4}}{\mkern {-1.5mu}}{\vphantom {A}}_{{\vphantom {2}}{\llap {\smash[{t}]{2}}}}^{{\smash[{t}]{\vphantom {2}}}{\llap {4}}}\mathrm {\alpha } }}](http://wikimedia.org/api/rest_v1/media/math/render/svg/417b58dc0023d764a37b78f2ebb761d8c7de9ec2)
![{\displaystyle {{\mathrm {^{~267m}_{108}Hs} }{}\mathrel {\longrightarrow } {}{\mathrm {^{~263}_{106}Sg} }{}+{}\,{\vphantom {A}}_{\hphantom {2}}^{\hphantom {4}}{\mkern {-1.5mu}}{\vphantom {A}}_{{\vphantom {2}}{\llap {\smash[{t}]{2}}}}^{{\smash[{t}]{\vphantom {2}}}{\llap {4}}}\mathrm {\alpha } }}](http://wikimedia.org/api/rest_v1/media/math/render/svg/2c23d0aa1ab6e96e4cfa210200928c0e18dc6d6e)
![{\displaystyle {{\mathrm {^{~268}_{108}Hs} }{}\mathrel {\longrightarrow } {}{\mathrm {^{~264}_{106}Sg} }{}+{}\,{\vphantom {A}}_{\hphantom {2}}^{\hphantom {4}}{\mkern {-1.5mu}}{\vphantom {A}}_{{\vphantom {2}}{\llap {\smash[{t}]{2}}}}^{{\smash[{t}]{\vphantom {2}}}{\llap {4}}}\mathrm {\alpha } }}](http://wikimedia.org/api/rest_v1/media/math/render/svg/28ca2b5553856444034bfc08b711cac26cbf2470)
![{\displaystyle {{\mathrm {^{~269}_{108}Hs} }{}\mathrel {\longrightarrow } {}{\mathrm {^{~265}_{106}Sg} }{}+{}\,{\vphantom {A}}_{\hphantom {2}}^{\hphantom {4}}{\mkern {-1.5mu}}{\vphantom {A}}_{{\vphantom {2}}{\llap {\smash[{t}]{2}}}}^{{\smash[{t}]{\vphantom {2}}}{\llap {4}}}\mathrm {\alpha } }}](http://wikimedia.org/api/rest_v1/media/math/render/svg/d50605fc1edab24d51d588c6935bad0dd88b3ac9)
![{\displaystyle {{\mathrm {^{~269m}_{108}Hs} }{}\mathrel {\longrightarrow } {}{\mathrm {^{~265}_{106}Sg} }{}+{}\,{\vphantom {A}}_{\hphantom {2}}^{\hphantom {4}}{\mkern {-1.5mu}}{\vphantom {A}}_{{\vphantom {2}}{\llap {\smash[{t}]{2}}}}^{{\smash[{t}]{\vphantom {2}}}{\llap {4}}}\mathrm {\alpha } }}](http://wikimedia.org/api/rest_v1/media/math/render/svg/8c51c443f8a77c8d73aa8fac370592a019161beb)
![{\displaystyle {{\mathrm {^{~270}_{108}Hs} }{}\mathrel {\longrightarrow } {}{\mathrm {^{~266}_{106}Sg} }{}+{}\,{\vphantom {A}}_{\hphantom {2}}^{\hphantom {4}}{\mkern {-1.5mu}}{\vphantom {A}}_{{\vphantom {2}}{\llap {\smash[{t}]{2}}}}^{{\smash[{t}]{\vphantom {2}}}{\llap {4}}}\mathrm {\alpha } }}](http://wikimedia.org/api/rest_v1/media/math/render/svg/eeb49c100b0a143c418718533ce86d078fdd8032)
![{\displaystyle {{\mathrm {^{~271}_{108}Hs} }{}\mathrel {\longrightarrow } {}{\mathrm {^{~267}_{106}Sg} }{}+{}\,{\vphantom {A}}_{\hphantom {2}}^{\hphantom {4}}{\mkern {-1.5mu}}{\vphantom {A}}_{{\vphantom {2}}{\llap {\smash[{t}]{2}}}}^{{\smash[{t}]{\vphantom {2}}}{\llap {4}}}\mathrm {\alpha } }}](http://wikimedia.org/api/rest_v1/media/math/render/svg/8a39dce7116a92378fb06e22671e9dd524cb887c)
![{\displaystyle {{\mathrm {^{~273}_{108}Hs} }{}\mathrel {\longrightarrow } {}{\mathrm {^{~269}_{106}Sg} }{}+{}\,{\vphantom {A}}_{\hphantom {2}}^{\hphantom {4}}{\mkern {-1.5mu}}{\vphantom {A}}_{{\vphantom {2}}{\llap {\smash[{t}]{2}}}}^{{\smash[{t}]{\vphantom {2}}}{\llap {4}}}\mathrm {\alpha } }}](http://wikimedia.org/api/rest_v1/media/math/render/svg/3f015faeda91d9218f6ae8df0c2e12b8e94bc6a9)
![{\displaystyle {{\mathrm {^{~275}_{108}Hs} }{}\mathrel {\longrightarrow } {}{\mathrm {^{~271}_{106}Sg} }{}+{}\,{\vphantom {A}}_{\hphantom {2}}^{\hphantom {4}}{\mkern {-1.5mu}}{\vphantom {A}}_{{\vphantom {2}}{\llap {\smash[{t}]{2}}}}^{{\smash[{t}]{\vphantom {2}}}{\llap {4}}}\mathrm {\alpha } }}](http://wikimedia.org/api/rest_v1/media/math/render/svg/35f2178ffa5e70dbac075fd4bcff66bbe1096080)
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Overzicht van isotopen per element
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Bronnen, noten en/of referenties
- (en) R.B. Firestone, S.Y. Frank Chu & C.M. Baglin (1999) - Table of Isotopes (online versie van de cd-rom)
- (en) G. Audi, A.H. Wapstra, C. Thibault, J. Blachot & O. Bersillon (2003) - The NUBASE evaluation of nuclear and decay properties, Nuclear Physics A, 729, pp. 3-128
- (en) J.R. de Laeter, J.K. Böhlke, P. De Bièvre, H. Hidaka, H.S. Peiser, K.J.R. Rosman & P.D.P. Taylor (2003) - Atomic weights of the elements. Review 2000 (IUPAC Technical Report), Pure and Applied Chemistry, 75 (6), pp. 683–800
- (en) M.E. Wieser (2006) - Atomic weights of the elements 2005 (IUPAC Technical Report), Pure and Applied Chemistry, 78 (11), pp. 2051–2066
- (en) David R. Lide (2004) - CRC Handbook of Chemistry and Physics (85th ed.), hoofdstuk 11, CRC Press - ISBN 978-0849304859
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