{"id":1534,"date":"2023-07-13T12:08:29","date_gmt":"2023-07-13T12:08:29","guid":{"rendered":"https:\/\/chemuza.org\/tr\/mendelevyum\/"},"modified":"2023-07-13T12:08:29","modified_gmt":"2023-07-13T12:08:29","slug":"mendelevyum","status":"publish","type":"page","link":"https:\/\/chemuza.org\/tr\/mendelevyum\/","title":{"rendered":"Mendelevion"},"content":{"rendered":"<p>Mendelevion<strong> <\/strong>Do\u011fada bulunmayan kimyasal bir element oldu\u011fundan \u00fcretimi nadirdir. Laboratuvar d\u0131\u015f\u0131nda hi\u00e7bir i\u015fe yaramaz, yaln\u0131zca bilimsel ara\u015ft\u0131rmalarda kullan\u0131l\u0131r. Periyodik tablonun bu elementi hakk\u0131nda her \u015feyi \u00f6\u011frenin.<\/p>\n<h2> <strong>Mendelevion nedir?<\/strong><\/h2>\n<p> Mendelevium kimyasal elementinin g\u00f6r\u00fcn\u00fcm\u00fc bilinmemektedir; renginin beyaz, gri veya g\u00fcm\u00fc\u015f olmas\u0131 muhtemeldir. 7. d\u00f6neme ait aktinit grubuna aittir ve Actinium&#8217;dan Lawrencium&#8217;a kadar uzan\u0131r. Bunlara lantanit grubuyla birlikte i\u00e7 ge\u00e7i\u015f elemanlar\u0131 denir. Do\u011fal hali bilinmemektedir.<\/p>\n<h3> <strong>Mendelev sembol\u00fc<\/strong><\/h3>\n<p> <span class=\"content-chemical-element\" style=\"float: left;width: 65px;height: 65px;border: 3px solid #666; display:flex;\n    justify-content: center;align-items: center;margin-right: 15px;\"><span style=\"font-size: 38px;\">H<\/span><\/span> Atom numaras\u0131 101 ve atom numaras\u0131 258 olan periyodik tabloda g\u00f6r\u00fclmektedir. 245 ve 260 olmak \u00fczere 16 izotop i\u00e7erir. Ortamdaki izotoplar daha b\u00fcy\u00fck olup 259 Mendelevio&#8217;dur ve 51 g\u00fcnd\u00fcr. Ard\u0131ndan 31,8 g\u00fcnl\u00fck 260 Md ve yaln\u0131zca 96 dakikal\u0131k \u00f6mre sahip 259 Mendelevio geliyor.<\/p>\n<h2> <strong>Mendelevyumun \u00f6zellikleri<\/strong><\/h2>\n<p> Mendelevyum elementi radyoaktif sentetik bir metaldir ve oda s\u0131cakl\u0131\u011f\u0131nda kat\u0131 haldedir. Yakla\u015f\u0131k 1.521 dereceye ula\u015fabildi\u011fi i\u00e7in y\u00fcksek derecede f\u00fczyon elde ediyor. Ek olarak oksidasyon durumu yaln\u0131zca 3&#8217;t\u00fcr, ancak oksidasyon 2&#8217;de de stabil oldu\u011fu g\u00f6sterilmi\u015ftir. Bu metalin dikkate de\u011fer \u00f6zelliklerinden baz\u0131lar\u0131 \u015funlard\u0131r:<\/p>\n<ul>\n<li> <strong>\u00c7\u00f6z\u00fcn\u00fcrl\u00fck:<\/strong> Sulu bir \u00e7\u00f6zeltiye dald\u0131r\u0131ld\u0131\u011f\u0131nda oksitlenir.<\/li>\n<li> <strong>Parlakl\u0131k:<\/strong> metalik.<\/li>\n<li> <strong>Kristal yap\u0131s\u0131:<\/strong> Merkezi k\u00fcbik.<\/li>\n<li> <strong>Durumu:<\/strong> Do\u011fal haliyle sa\u011flamd\u0131r.<\/li>\n<\/ul>\n<h2> <strong>Mendelevyumun kimyasal ve fiziksel \u00f6zellikleri<\/strong><\/h2>\n<ol>\n<li> <strong>Atom numaras\u0131<\/strong> : 101<\/li>\n<li> <strong>D\u00f6nem:<\/strong> 7<\/li>\n<li> <strong>blok:<\/strong> f<\/li>\n<li> <strong>Erime noktas\u0131:<\/strong> 1100K<\/li>\n<li> <strong>Kaynama noktas\u0131:<\/strong> Bilinmiyor.<\/li>\n<li> <strong>Elektronik konfig\u00fcrasyon:<\/strong> [Rn] 5f <sup>13<\/sup> 7s <sup>2<\/sup><\/li>\n<li> <strong>Yo\u011funluk:<\/strong> yakla\u015f\u0131k 10,3<\/li>\n<li> <strong>Elektronegatiflik:<\/strong> 1.3<\/li>\n<\/ol>\n<h2> <strong>Mendelevyumun K\u00f6keni<\/strong><\/h2>\n<p> Aktinit grubunda ke\u015ffedilen transuranid elementler aras\u0131nda Californium, Fermium, Curium ve Einsteinium kimyasal elementlerinin yan\u0131 s\u0131ra dokuzuncu s\u0131rada yer al\u0131r. \u0130lk olarak n\u00fckleer bilim adam\u0131 Albert Ghiorso ve kimyagerler Stanley G. Thompson, Bernard G. Harvey, Gregory R. Choppin ve Glenn T. Seaborg taraf\u0131ndan tan\u0131mland\u0131.<\/p>\n<p> 1955 y\u0131l\u0131nda Kaliforniya \u00dcniversitesi&#8217;nde bu grup bilim insan\u0131, siklotron ad\u0131 verilen yakla\u015f\u0131k 60 in\u00e7lik bir par\u00e7ac\u0131k h\u0131zland\u0131r\u0131c\u0131da 2530 Einsteinium izotopunu helyum iyonlar\u0131yla bombalad\u0131. O d\u00f6nemde \u00f6mr\u00fc 76 dakika olan 256 Mendelevium izotopunu \u00fcrettiler. Daha sonra, elementin fiziksel ve kimyasal \u00f6zelliklerini incelemek i\u00e7in kullan\u0131lan Einsteinium izotopunun helyum iyonlar\u0131yla bombard\u0131man\u0131ndan yakla\u015f\u0131k 55 g\u00fcnl\u00fck izotop 258 de elde edildi.<\/p>\n<h2> <strong>Mendelevyum ne i\u00e7in kullan\u0131l\u0131r?<\/strong><\/h2>\n<p> Mendelevyumun bilinen herhangi bir kullan\u0131m\u0131 yoktur, \u00e7\u00fcnk\u00fc bu element do\u011fal haliyle \u00e7ok nadirdir, radyoaktif ve toksiktir. Dolay\u0131s\u0131yla pazarlanabilecek miktarlarda \u00fcretilmesi m\u00fcmk\u00fcn de\u011fildir. \u015eu anda yaln\u0131zca bilimsel ara\u015ft\u0131rma uygulamalar\u0131nda kullan\u0131lmaktad\u0131r. Ne olursa olsun, sulu \u00e7\u00f6zeltideki kimyasal \u00f6zelliklerini tam olarak anlamak i\u00e7in izotop 256 kullan\u0131ld\u0131. Zamanla di\u011fer aktinit metallerde oldu\u011fu gibi enerji hasad\u0131 ve teknolojik uygulamalarda kullan\u0131labilece\u011fine inan\u0131lmaktad\u0131r.<\/p>\n<h2> <strong>Mendelevius isminin k\u00f6keni<\/strong><\/h2>\n<p> Ge\u00e7mi\u015fte Unnilunio olarak biliniyordu ancak periyodik tabloyu geli\u015ftiren Rus kimyager Dmitri Mendeleyev&#8217;in onuruna Mendelevium olarak de\u011fi\u015ftirildi. Ke\u015fif, Amerika Birle\u015fik Devletleri ile Rusya aras\u0131ndaki So\u011fuk Sava\u015f&#8217;\u0131n ortas\u0131nda ger\u00e7ekle\u015fti\u011finden, yeni ke\u015ffedilen metalin ad\u0131n\u0131n a\u00e7\u0131klanmas\u0131 i\u00e7in Kuzey Amerika h\u00fck\u00fcmetinden izin al\u0131nmas\u0131 gerekiyordu. Bu talep, IUPAC&#8217;\u0131n daha sonra 1957&#8217;de Md olarak de\u011fi\u015ftirilen Mv sembol\u00fc alt\u0131ndaki tan\u0131m\u0131 kabul etti\u011fi 1955 y\u0131l\u0131na kadar kabul edilmedi.<\/p>\n<h3> <strong>Mendelevium&#8217;un sa\u011fl\u0131k ve \u00e7evre \u00fczerindeki etkileri<\/strong><\/h3>\n<p> Mendelevyum do\u011fada do\u011fal olarak olu\u015fmad\u0131\u011f\u0131ndan ve yerkabu\u011funda varl\u0131\u011f\u0131na dair hi\u00e7bir kan\u0131t bulunmad\u0131\u011f\u0131ndan, \u00e7evre \u00fczerinde herhangi bir ters etkiye sahip oldu\u011funu ileri s\u00fcrmek i\u00e7in hi\u00e7bir temel olmad\u0131\u011f\u0131 d\u00fc\u015f\u00fcn\u00fclmektedir. Ancak do\u011fru \u015fekilde kullan\u0131lmad\u0131\u011f\u0131 takdirde radyoaktif bir element oldu\u011fundan sa\u011fl\u0131\u011fa zararl\u0131 olabilir.<\/p>\n<h2> <strong>Mendelevyum toksisitesi<\/strong><\/h2>\n<p> Her ne kadar \u00e7ok az ki\u015fi bu elementle do\u011frudan temasa ge\u00e7se de, Uluslararas\u0131 Radyolojik Koruma Komisyonu daha kararl\u0131 izotop i\u00e7in belirli y\u0131ll\u0131k maruz kalma limitleri belirlemi\u015ftir. 258 Mendelevyum izotopu durumunda soluma s\u0131n\u0131r\u0131 6.000 Becquerel&#8217;dir ve yutma s\u0131n\u0131r\u0131 9 x 10 <sup>5<\/sup> bq&#8217;dur.<\/p>\n<p> K\u0131sacas\u0131 Mendelevyum do\u011fada ve yerkabu\u011funda nadir olarak bulunur. Yapay olarak ancak k\u00fc\u00e7\u00fck miktarlarda \u00fcretildi. Bilinen herhangi bir olumsuz sa\u011fl\u0131k etkisi olmamas\u0131na ra\u011fmen, olduk\u00e7a radyoaktif oldu\u011fundan uygun \u015fekilde ele al\u0131nmal\u0131d\u0131r.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mendelevion Do\u011fada bulunmayan kimyasal bir element oldu\u011fundan \u00fcretimi nadirdir. Laboratuvar d\u0131\u015f\u0131nda hi\u00e7bir i\u015fe yaramaz, yaln\u0131zca bilimsel ara\u015ft\u0131rmalarda kullan\u0131l\u0131r. Periyodik tablonun bu elementi hakk\u0131nda her \u015feyi \u00f6\u011frenin. Mendelevion nedir? Mendelevium kimyasal elementinin g\u00f6r\u00fcn\u00fcm\u00fc bilinmemektedir; renginin beyaz, gri veya g\u00fcm\u00fc\u015f olmas\u0131 muhtemeldir. 7. d\u00f6neme ait aktinit grubuna aittir ve Actinium&#8217;dan Lawrencium&#8217;a kadar uzan\u0131r. Bunlara lantanit grubuyla birlikte &#8230; <a title=\"Mendelevion\" class=\"read-more\" href=\"https:\/\/chemuza.org\/tr\/mendelevyum\/\" aria-label=\"More on Mendelevion\">Devam\u0131n\u0131 oku<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Mendelevion-Chemuza<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/chemuza.org\/tr\/mendelevyum\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Mendelevion-Chemuza\" \/>\n<meta property=\"og:description\" content=\"Mendelevion Do\u011fada bulunmayan kimyasal bir element oldu\u011fundan \u00fcretimi nadirdir. 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