{"id":1519,"date":"2023-07-13T19:24:54","date_gmt":"2023-07-13T19:24:54","guid":{"rendered":"https:\/\/chemuza.org\/tr\/aktinyum\/"},"modified":"2023-07-13T19:24:54","modified_gmt":"2023-07-13T19:24:54","slug":"aktinyum","status":"publish","type":"page","link":"https:\/\/chemuza.org\/tr\/aktinyum\/","title":{"rendered":"Aktinyum"},"content":{"rendered":"<p>Aktinitler veya Aktinoidler ad\u0131 verilen kimyasal serinin ba\u015f\u0131ndaki elementtir. Davran\u0131\u015f\u0131 lantana benzer, genellikle eser miktarda uranyum mineralleri halinde bulunur ve y\u00fcksek radyoaktivite g\u00f6sterir. O halde Actinium&#8217;un di\u011fer \u00f6zelliklerini ve \u00f6zelliklerini ke\u015ffedin.<\/p>\n<h2> <strong>Aktinyum nedir?<\/strong><\/h2>\n<p> Lanthanidos serisiyle i\u00e7 ge\u00e7i\u015fe sahip metalik bir elementtir, yani nadir toprakt\u0131r. Aktinyum yo\u011fun radyoaktivite, g\u00fcm\u00fc\u015fi bir g\u00f6r\u00fcn\u00fcm ve karanl\u0131kta mavimsi bir parlakl\u0131k sergiler. Ayr\u0131ca yumu\u015fakt\u0131r, a\u011f\u0131rd\u0131r, kokusuzdur ve \u00e7\u0131kar\u0131lmas\u0131 ve mineral kaynaklar\u0131ndan ayr\u0131lmas\u0131 zordur.<\/p>\n<h3> <strong>Aktinyum 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;\">Ac<\/span><\/span> Actinium&#8217;un kimyasal sembol\u00fc, etimolojik olarak Yunanca <em>aktis<\/em> kelimesinden ve anlam\u0131 <em>\u0131\u015f\u0131n<\/em> veya <em>\u0131\u015f\u0131k \u0131\u015f\u0131n\u0131<\/em> anlam\u0131na gelen <em>aktinos<\/em> ifadesinden gelen ad\u0131n\u0131n k\u0131saltmas\u0131d\u0131r. Bu adland\u0131rma uygundur \u00e7\u00fcnk\u00fc elementin radyoaktif niteliklerini ima etmektedir.<\/p>\n<h2> <strong>Aktinyumun \u00d6zellikleri<\/strong><\/h2>\n<p> Organoleptik \u00f6zellikleri aras\u0131nda yumu\u015fak, kokusuz, a\u011f\u0131r ve parlak bir element oldu\u011funu g\u00f6r\u00fcyoruz. \u00d6te yandan 1 ton uranyum cevherinden 0,1 gram element \u00e7\u0131kar\u0131labiliyor. Ac <sup>+3<\/sup> var olan en b\u00fcy\u00fck katyondur ve ayr\u0131ca yakla\u015f\u0131k 11 molek\u00fcl H\u2082O i\u00e7erebilir. Actinium&#8217;un di\u011fer \u00f6zelliklerini ke\u015ffedin:<\/p>\n<ul>\n<li> <strong>Kimyasal reaktivite<\/strong> : Atmosferdeki oksijenin varl\u0131\u011f\u0131nda h\u0131zla reaksiyona girerek bir film veya oksit tabakas\u0131 olu\u015fturur, b\u00f6ylece olas\u0131 oksidasyonu \u00f6nler.<\/li>\n<li> <strong>Renk<\/strong> : Beyaz, g\u00fcm\u00fc\u015fi, parlak bir tona sahiptir.<\/li>\n<li> <strong>Durumu<\/strong> : Normal \u00e7evre ko\u015fullar\u0131nda kat\u0131 haldedir.<\/li>\n<li> <strong>Erime ve Kaynama<\/strong> : Y\u00fcksek erime ve kaynama noktas\u0131na sahiptir.<\/li>\n<li> <strong>Oksidasyon durumlar\u0131<\/strong> : +3 oksidasyon durumundan dolay\u0131 g\u00fc\u00e7l\u00fc bir bazik veya metalik oksit gibi davran\u0131r.<\/li>\n<li> <strong>Radyoaktivite<\/strong> : Radyoaktivitesi genellikle Radyumunkinden 150 kat daha fazla olan yo\u011fun bir radyoaktif elementtir.<\/li>\n<li> <strong>Kristal yap\u0131<\/strong> : Y\u00fcz merkezli k\u00fcbik yap\u0131ya sahiptir.<\/li>\n<li> <strong>Atom bile\u015fimi<\/strong> : 138 n\u00f6tron, 89 proton ve 89 elektrondan olu\u015fur. <strong>&nbsp;<\/strong><\/li>\n<li> <strong>\u0130zotoplar<\/strong> : 22&#8217;si yapay ve hepsinin yar\u0131 \u00f6mr\u00fc k\u0131sa olan 30 izotop i\u00e7erir.<\/li>\n<\/ul>\n<h2> <strong>Aktinyumun kimyasal ve fiziksel \u00f6zellikleri<\/strong><\/h2>\n<ol>\n<li> <strong>Atom numaras\u0131<\/strong> : 89<\/li>\n<li> <strong>Oksit<\/strong> : N\u00f6tr<\/li>\n<li> <strong>Oksidasyon durumlar\u0131<\/strong> : +3<\/li>\n<li> <strong>Yo\u011funluk (g\/ml)<\/strong> : 10.070 kg\/ <sup>m3<\/sup><\/li>\n<li> <strong>Ortalama yar\u0131\u00e7ap (\u00c5)<\/strong> : 195 pm<\/li>\n<li> <strong>Atom yar\u0131\u00e7ap\u0131 (\u00c5)<\/strong> : 188 pm<\/li>\n<li> <strong>\u00d6zg\u00fcl \u0131s\u0131<\/strong> : Veri yok<\/li>\n<li> <strong>Atom k\u00fctlesi (g\/mol)<\/strong> : 227 u<\/li>\n<li> <strong>Erime noktas\u0131<\/strong> : 1050\u00b0C (1323K)<\/li>\n<li> <strong>Birinci iyonla\u015fma potansiyeli (eV)<\/strong> : 499 kJ\/mol<\/li>\n<li> <strong>Kaynama noktas\u0131<\/strong> : 3198\u00b0C (3471 K)<\/li>\n<li> <strong>Elektronik konfig\u00fcrasyon<\/strong> : [Rn] 6d <sup>1<\/sup> 7s <sup>2<\/sup><\/li>\n<li> <strong>Seviye ba\u015f\u0131na elektronlar<\/strong> : 2, 8, 18, 32, 18, 9, 2<\/li>\n<li> <strong>Buharla\u015fma entalpisi<\/strong> : 418 kJ\/mol<\/li>\n<li> <strong>Elektronegatiflik<\/strong> : 1.1 (Pauling \u00f6l\u00e7e\u011fi)<\/li>\n<li> <strong>F\u00fczyon entalpisi<\/strong> : 62 kJ\/mol<\/li>\n<li> <strong>Ses h\u0131z\u0131<\/strong> : Veri yok<\/li>\n<\/ol>\n<h2> <strong>Aktinyumun K\u00f6keni<\/strong><\/h2>\n<p> Actinium&#8217;un ge\u00e7mi\u015fine g\u00f6re bu element iki bilim adam\u0131 taraf\u0131ndan ba\u011f\u0131ms\u0131z olarak ke\u015ffedildi. \u0130lk vaka, 1899&#8217;da onu Uraninit mineralinden elde eden kimyager Andr\u00e9-Louis Debierne&#8217;den kaynakland\u0131. Ayn\u0131 y\u0131l onu Titanyum&#8217;a, 1900&#8217;de ise Toryum&#8217;a benzer bir madde olarak s\u0131n\u0131fland\u0131rd\u0131. Daha sonra 1900-1904 y\u0131llar\u0131 aras\u0131nda <em>Aktinyum<\/em> ad\u0131n\u0131 verdi\u011fi metal \u00fczerinde daha ileri \u00e7al\u0131\u015fmalar yapt\u0131.<\/p>\n<p> \u0130kinci \u00f6rnek, onu lantana benzer bir maddeyle kar\u015f\u0131la\u015ft\u0131ran ve 1904&#8217;te ona <em>Emanyum<\/em> ad\u0131n\u0131 veren Alman kimyager Friedrich Oscar Giesel&#8217;in durumudur. \u0130ki bulgu kar\u015f\u0131la\u015ft\u0131r\u0131ld\u0131 ve ayn\u0131 olduklar\u0131 sonucuna var\u0131ld\u0131. Ancak, resmi ka\u015fifi olarak kabul edilen Andr\u00e9-Louis Debierne taraf\u0131ndan \u00f6nerilen isim korundu.<\/p>\n<h2> <strong>Actinium ne i\u00e7in kullan\u0131l\u0131r?<\/strong><\/h2>\n<p> Actinium elementinin faydas\u0131 \u00f6ncelikle bilimsel ara\u015ft\u0131rmalar i\u00e7indir. Ancak y\u00fcksek radyoaktivitesi sayesinde n\u00f6tron kayna\u011f\u0131 olarak faydal\u0131 olabilir. Buna ra\u011fmen burada ele al\u0131nanlar\u0131n \u00f6tesinde \u00f6nemli ticari ve end\u00fcstriyel uygulamalar i\u00e7ermemektedir:<\/p>\n<h3> <strong>T\u0131bbi kullan\u0131mlar<\/strong><\/h3>\n<p> Aktinyum kimyasal elementi olduk\u00e7a radyoaktif oldu\u011fundan t\u0131p alan\u0131ndaki ara\u015ft\u0131rmalarda kullan\u0131l\u0131r. \u00d6rne\u011fin, \u00fcretim s\u00fcreci n\u00f6tronlar\u0131n ve <sup>226<\/sup> Ra izotoplar\u0131n\u0131n n\u00fckleer reakt\u00f6rlerde \u0131\u015f\u0131nlanmas\u0131n\u0131 i\u00e7erdi\u011finden kansere kar\u015f\u0131 olas\u0131 tedaviler i\u00e7in.<\/p>\n<h3> <strong>NASA uzay arac\u0131nda<\/strong><\/h3>\n<p> Bilim adamlar\u0131, bu metalin gelecekteki radyoaktif izotop termoelektrik jenerat\u00f6rlerinin \u00fcretiminde kullan\u0131m a\u00e7\u0131s\u0131ndan b\u00fcy\u00fck bir potansiyele sahip oldu\u011fu konusunda hemfikir. Gemilere daha fazla g\u00fc\u00e7 sa\u011flamak i\u00e7in kullan\u0131\u015fl\u0131d\u0131rlar.<\/p>\n<h3> <strong>Okyanustaki dikey kar\u0131\u015f\u0131m\u0131 hesaplay\u0131n<\/strong><\/h3>\n<p> Actinium&#8217;da do\u011fal olarak tan\u0131mlanan tek izotop, ana \u00f6zelli\u011fi 21,77 y\u0131ll\u0131k ortalama \u00f6mre sahip olan <sup>227<\/sup> Ac&#8217;dir. Bu nedenle okyanus sular\u0131ndaki dikey kar\u0131\u015f\u0131m\u0131n tahmini ve hesaplanmas\u0131 gibi limnolojik s\u00fcre\u00e7lerde kullanmak i\u00e7in ideal bir \u00f6zelliktir.<\/p>\n<p> Sonu\u00e7 olarak, Aktinyum metali, Aktinitlerin kimyasal serisine hakim olan elementtir. Olduk\u00e7a radyoaktif, g\u00fcm\u00fc\u015f renkli, a\u011f\u0131r, kokusuz ve yumu\u015fakt\u0131r. Ayr\u0131ca karanl\u0131kta parlak mavimsi bir \u0131\u015f\u0131k sunmas\u0131yla karakterize edilir ve ticari bir uygulamas\u0131 yoktur, daha ziyade bilimsel ara\u015ft\u0131rmalar i\u00e7in kullan\u0131l\u0131r.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Aktinitler veya Aktinoidler ad\u0131 verilen kimyasal serinin ba\u015f\u0131ndaki elementtir. Davran\u0131\u015f\u0131 lantana benzer, genellikle eser miktarda uranyum mineralleri halinde bulunur ve y\u00fcksek radyoaktivite g\u00f6sterir. O halde Actinium&#8217;un di\u011fer \u00f6zelliklerini ve \u00f6zelliklerini ke\u015ffedin. Aktinyum nedir? Lanthanidos serisiyle i\u00e7 ge\u00e7i\u015fe sahip metalik bir elementtir, yani nadir toprakt\u0131r. Aktinyum yo\u011fun radyoaktivite, g\u00fcm\u00fc\u015fi bir g\u00f6r\u00fcn\u00fcm ve karanl\u0131kta mavimsi bir parlakl\u0131k &#8230; <a title=\"Aktinyum\" class=\"read-more\" href=\"https:\/\/chemuza.org\/tr\/aktinyum\/\" aria-label=\"More on Aktinyum\">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>Aktinyum - 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\/aktinyum\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Aktinyum - Chemuza\" \/>\n<meta property=\"og:description\" content=\"Aktinitler veya Aktinoidler ad\u0131 verilen kimyasal serinin ba\u015f\u0131ndaki elementtir. 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