{"id":1488,"date":"2023-07-14T07:59:06","date_gmt":"2023-07-14T07:59:06","guid":{"rendered":"https:\/\/chemuza.org\/tr\/sezyum\/"},"modified":"2023-07-14T07:59:06","modified_gmt":"2023-07-14T07:59:06","slug":"sezyum","status":"publish","type":"page","link":"https:\/\/chemuza.org\/tr\/sezyum\/","title":{"rendered":"Sezyum"},"content":{"rendered":"<p>Sezyum, y\u00fcksek reaktivitesi nedeniyle pollosit ve lepidolit minerallerinde, toz ve kayalarda minimum konsantrasyonlarda bulunur. Sadece izotopu 133 ile stabil do\u011fal halde bulunur. Ayr\u0131ca bile\u015fikleri elektronik, kimya, medikal ve elektrik sekt\u00f6rlerinde b\u00fcy\u00fck be\u011feni toplamaktad\u0131r. Bu yaz\u0131m\u0131zda sizi \u00f6zellikleri, kullan\u0131m alanlar\u0131 ve di\u011fer y\u00f6nleri hakk\u0131nda bilgilendiriyoruz.<\/p>\n<h2> <strong>Sezyum nedir?<\/strong><\/h2>\n<p> Periyodik tabloda atom numaras\u0131 55 olan grup 1&#8217;de yer alan bir alkali metaldir. Alkali elementlerin en a\u011f\u0131r\u0131d\u0131r ve inorganik bile\u015fiklerin olu\u015fumuyla ay\u0131rt edilir. Ek olarak parlak g\u00fcm\u00fc\u015fi beyaz renktedir ve nemli havan\u0131n varl\u0131\u011f\u0131nda h\u0131zla oksitlenir.<\/p>\n<h3> <strong>Sezyum 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;\">Cs<\/span><\/span> Ad\u0131 Latincede mavi g\u00f6ky\u00fcz\u00fc anlam\u0131na gelen <em>caesius<\/em> kelimesinden gelmektedir. Ke\u015ffi s\u0131ras\u0131nda bir maden suyu \u00f6rne\u011finde 2 mavi spektroskopik \u00e7izgiyi yans\u0131tt\u0131\u011f\u0131 i\u00e7in bu ismi alm\u0131\u015ft\u0131r.<\/p>\n<h2> <strong>Sezyumun \u00f6zellikleri<\/strong><\/h2>\n<p> \u00c7ok yumu\u015fak, erime noktas\u0131 d\u00fc\u015f\u00fck olan a\u011f\u0131r bir metale kar\u015f\u0131l\u0131k gelir. Grubunun en reaktif alkalilerinden biridir, piroforik yani nemli havada yan\u0131c\u0131d\u0131r. Ayr\u0131ca y\u00fcksek s\u0131cakl\u0131klarda hidrojenle reaksiyona girerek hidrojen bile\u015fikleri olu\u015fturur. Daha fazla \u00f6zellik a\u015fa\u011f\u0131da listelenmi\u015ftir:<\/p>\n<ul>\n<li> <strong>Durumu<\/strong> : D\u00fc\u015f\u00fck s\u0131cakl\u0131kta kat\u0131 ve s\u0131v\u0131.<\/li>\n<li> <strong>Tat ve koku<\/strong> : Kokusuzdur ve karakteristik tad\u0131 yoktur.<\/li>\n<li> <strong>Bile\u015fimi<\/strong> : 55 elektron ve proton ile 78 n\u00f6trondan olu\u015fur. \u00c7ekirdekte elektronlar\u0131n enerji d\u00fczeyi 6&#8217;d\u0131r.<\/li>\n<li> <strong>Toksisite<\/strong> : Orta. Ancak bu elemente a\u015f\u0131r\u0131 maruz kalmak sindirim hastal\u0131klar\u0131na, kanamaya ve \u00f6l\u00fcme neden olur.<\/li>\n<li> <strong>Reaktivite:<\/strong> Y\u00fcksek, suyla \u015fiddetli reaksiyona girerek sezyum hidroksit, halojenler, buz, karbon monoksit ve amonyakla reaksiyona girer.<\/li>\n<li> <strong>\u00c7\u00f6z\u00fcn\u00fcrl\u00fck<\/strong> : Element ve bile\u015fikleri suda \u00e7\u00f6z\u00fcn\u00fcr.<\/li>\n<li> <strong>Kristalle\u015fme<\/strong> : T\u00fcm v\u00fccutta k\u00fcbik merkezli.<\/li>\n<li> <strong>\u0130letkenlik<\/strong> : \u0130yi elektrik iletkenli\u011fi sunar.<\/li>\n<\/ul>\n<h2> <strong>Sezyumun kimyasal ve fiziksel \u00f6zellikleri<\/strong><\/h2>\n<ol>\n<li> <strong>Atom numaras\u0131<\/strong> : 55<\/li>\n<li> <strong>D\u00f6nem<\/strong> : 6<\/li>\n<li> <strong>Blok<\/strong> : S<\/li>\n<li> <strong>Grup<\/strong> : 1<\/li>\n<li> <strong>Oksidasyon durumu<\/strong> : 1<\/li>\n<li> <strong>\u0130yonla\u015fma enerjisi:<\/strong> 375,7<\/li>\n<li> <strong>Pas:<\/strong> G\u00fc\u00e7l\u00fc<\/li>\n<li> <strong>Atom k\u00fctlesi (g\/mol):<\/strong> 132,90545<strong> <\/strong>Alt\u0131n<\/li>\n<li> <strong>Yo\u011funluk:<\/strong> 1879 Kg\/m3<\/li>\n<li> <strong>Kaynama noktas\u0131:<\/strong> 671<strong> <\/strong>\u00b0C<\/li>\n<li> <strong>Erime noktas\u0131:<\/strong> 28<strong> <\/strong>\u00b0C<\/li>\n<li> <strong>Kovalent yar\u0131\u00e7ap:<\/strong> 225 pm<\/li>\n<li> <strong>Atom yar\u0131\u00e7ap\u0131:<\/strong> 298 pm<\/li>\n<li> <strong>Ortalama yar\u0131\u00e7ap:<\/strong> 260 saat<\/li>\n<li> <strong>Elektronegatiflik:<\/strong> 0,79<\/li>\n<li> <strong>\u00d6zg\u00fcl \u0131s\u0131:<\/strong> 240 J \/ (K kg)<\/li>\n<li> <strong>Elektronik konfig\u00fcrasyon:<\/strong> [Xe] 6s1<\/li>\n<li> <strong>Katman ba\u015f\u0131na elektron say\u0131s\u0131:<\/strong> 2, 8, 18, 18, 8,<strong> <\/strong>1<\/li>\n<li> <strong>Is\u0131 iletkenli\u011fi:<\/strong> 35,9 W\/(Km)<\/li>\n<li> <strong>Elektrik iletkenli\u011fi:<\/strong> 4,89 x 106 S\/m<\/li>\n<\/ol>\n<h2> <strong>Sezyumun k\u00f6keni<\/strong><\/h2>\n<p> Bu element 1860 y\u0131l\u0131nda Gustav Kirchhoff ve Robert Bunsen taraf\u0131ndan bir spektroskop kullan\u0131larak ke\u015ffedildi. Ekipmanda iki metal tuzu olan 2 parlak mavi \u00e7izgi yans\u0131d\u0131. Bunsen onlar\u0131 maden suyuyla izole etmeyi ba\u015fard\u0131, ancak elementin metalik hali ile bunu ba\u015faramad\u0131. Carl Setterberg&#8217;in onu sezyum siyan\u00fcrle elektroliz yoluyla izole etmesi 1862 y\u0131l\u0131na kadar de\u011fildi.<\/p>\n<h2> <strong>Sezyum ne i\u00e7in kullan\u0131l\u0131r?<\/strong><\/h2>\n<p> Fotosellerin, sintilasyon saya\u00e7lar\u0131n\u0131n, askeri k\u0131z\u0131l\u00f6tesi lambalar\u0131n, spektrografik ekipmanlar\u0131n, optik ve alg\u0131lama cihazlar\u0131n\u0131n \u00fcretiminde kullan\u0131l\u0131r. Kristallerin, seramiklerin imalat\u0131nda ve karbondioksit ar\u0131tma tesislerinde emici olarak kullan\u0131l\u0131r. Di\u011fer kullan\u0131mlar \u015funlard\u0131r:<\/p>\n<h3> <strong>\u0130la\u00e7<\/strong><\/h3>\n<p> Sezyum-137, kansere y\u00f6nelik radyoterapi tedavilerinde brakiterapi ad\u0131 verilen bir prosed\u00fcrde kullan\u0131l\u0131r. Kullan\u0131lan malzeme t\u00fcm\u00f6rl\u00fc hastalara yerle\u015ftirilen ve yan etkisi olmayan boncuklardan olu\u015fuyor. Ayr\u0131ca elementin tuzlar\u0131, arsenik i\u00e7eren ila\u00e7lar\u0131n uygulanmas\u0131ndan sonra topikal bir anti-\u015fok olarak kullan\u0131l\u0131r.<\/p>\n<h3> <strong>Bilim<\/strong><\/h3>\n<p> Bilim sekt\u00f6r\u00fcnde bu element, sezyum 133 atomunun enerjisine dayal\u0131 olarak zaman\u0131n \u00f6l\u00e7\u00fclmesinden sorumlu olan atom saatlerinin geli\u015ftirilmesinde kullan\u0131lmaktad\u0131r. Ayr\u0131ca 7 \u00f6l\u00e7\u00fcm \u00f6l\u00e7e\u011finden olu\u015fan Uluslararas\u0131 Sistem veya SI birimlerini belirtmek i\u00e7in kullan\u0131l\u0131r. . .<\/p>\n<h3> <strong>Sanayi<\/strong><\/h3>\n<p> Termonik jenerat\u00f6rlerde elementten \u00e7\u0131kan buhar, \u0131s\u0131n\u0131n d\u00fc\u015f\u00fck g\u00fc\u00e7l\u00fc elektrik enerjisine d\u00f6n\u00fc\u015ft\u00fcr\u00fclmesinde kullan\u0131l\u0131r. Sezyumun di\u011fer \u00f6zellikleri, manyetik alan\u0131n g\u00fcc\u00fcn\u00fc \u00f6l\u00e7en manyetometrelerin kalibrasyonunda kullan\u0131l\u0131r.<\/p>\n<h2> <strong>Sezyum nerede bulunur?<\/strong><\/h2>\n<p> 7 ppm oran\u0131nda minerallerle kar\u0131\u015farak \u00e7evreye at\u0131l\u0131r. Yerkabu\u011funda metalik formu yayg\u0131n de\u011fildir, ancak erozyon ve kayalardan k\u00fc\u00e7\u00fck saf \u00f6rnekler gelir. Ayr\u0131ca minerallerin \u00e7\u0131kar\u0131lmas\u0131 ve ezilmesi s\u0131ras\u0131nda element havaya, topra\u011fa ve suya sal\u0131n\u0131r. Radyoaktif formuyla do\u011fada n\u00fckleer santrallerde, silah patlamalar\u0131nda ve n\u00fckleer kazalarda bulunur.<\/p>\n<h2> <strong>Sezyum nas\u0131l elde edilir?<\/strong><\/h2>\n<p> Ana bile\u015fi\u011fi olan pollusit&#8217;in, bu mineralin g\u00fc\u00e7l\u00fc asitlerde sindirilmesiyle elde edilir. En \u00e7ok kullan\u0131lanlar hidroklorik, hidrobromik, hidroflorik ve s\u00fclf\u00fcriktir. Proseste alkali ayr\u0131\u015ft\u0131rma ve do\u011frudan indirgeme y\u00f6ntemleri kullan\u0131l\u0131r. Son olarak saf metali elde etmek i\u00e7in sezyum siyan\u00fcr elektrolizi uygulan\u0131r.<\/p>\n<p> \u00d6zetle bu alkali metal, a\u011f\u0131r karakteri ve kendi grubunun en reaktif olan\u0131d\u0131r. Sezyumun kullan\u0131mlar\u0131 ve uygulamalar\u0131, d\u00fc\u015f\u00fck erime noktas\u0131 ve iletkenli\u011fi nedeniyle t\u0131bbi ve bilimsel alana kadar uzan\u0131r.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Sezyum, y\u00fcksek reaktivitesi nedeniyle pollosit ve lepidolit minerallerinde, toz ve kayalarda minimum konsantrasyonlarda bulunur. Sadece izotopu 133 ile stabil do\u011fal halde bulunur. Ayr\u0131ca bile\u015fikleri elektronik, kimya, medikal ve elektrik sekt\u00f6rlerinde b\u00fcy\u00fck be\u011feni toplamaktad\u0131r. Bu yaz\u0131m\u0131zda sizi \u00f6zellikleri, kullan\u0131m alanlar\u0131 ve di\u011fer y\u00f6nleri hakk\u0131nda bilgilendiriyoruz. Sezyum nedir? Periyodik tabloda atom numaras\u0131 55 olan grup 1&#8217;de yer &#8230; <a title=\"Sezyum\" class=\"read-more\" href=\"https:\/\/chemuza.org\/tr\/sezyum\/\" aria-label=\"More on Sezyum\">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>Sezyum - 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\/sezyum\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Sezyum - Chemuza\" \/>\n<meta property=\"og:description\" content=\"Sezyum, y\u00fcksek reaktivitesi nedeniyle pollosit ve lepidolit minerallerinde, toz ve kayalarda minimum konsantrasyonlarda bulunur. 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