{"id":1719,"date":"2011-07-06T15:15:06","date_gmt":"2011-07-06T12:15:06","guid":{"rendered":"http:\/\/www.islamidavet.com\/kutuphane\/\/?p=1719"},"modified":"2011-07-06T15:15:06","modified_gmt":"2011-07-06T12:15:06","slug":"seryum","status":"publish","type":"post","link":"https:\/\/www.islamidavet.com\/kutuphane\/seryum\/","title":{"rendered":"Seryum"},"content":{"rendered":"<p>Sembol: Ce<\/p>\n<p>Atom numaras\u0131: 58<br \/>\n Atom a\u011f\u0131rl\u0131\u011f\u0131: 140.116 g\/mol<br \/>\n Oda ko\u015fullar\u0131nda (25\u00b0C 298 K):  G\u00fcm\u00fc\u015f\u00fcms\u00fc beyaz kat\u0131 metalik<br \/>\n Lantanit serisi elementi<br \/>\n f-blok elementi<br \/>\nSeryum 1803 y\u0131l\u0131nda \u0130sve\u00e7\u2019 te J\u00f6ns Jacob Berzelius ve Wilhelm von Hisinger taraf\u0131ndan ke\u015ffedildi. Ayn\u0131 y\u0131l bu ke\u015fiften ba\u011f\u0131ms\u0131z olarak Almanya\u2019 da Martin Heinrich Klaproth taraf\u0131ndan da ke\u015ffedilmesi ilgin\u00e7 bir tesad\u00fcft\u00fcr.<br \/>\nSeryum ve di\u011fer lantanit serisindeki elementlerin minerallerinde izolasyonu \u00e7ok zordur. En bilinen mineralleri xenotim, monazit (Ce, La, Th, Nd, Y)PO4 ve bastnaesittir (Ce, La, Y)CO3F.<br \/>\nSeryumun cevherinden ay\u0131r\u0131larak saf olarak elde edilmesi \u00e7ok kompleks bir y\u00f6ntemle ger\u00e7ekle\u015fir. \u00d6ncelikle ekstraksiyon yolu ile cevherden tuzu halinde s\u00fclf\u00fcrik asit, hidroklorik asit ve sodyum hidroksit ile ekstrakte edilir. Seryum (IV) iyonu di\u011fer lantanitlerden daha \u00e7abuk hizroliz oldu\u011fu i\u00e7in KmnO4 y\u00fckseltgen ajan\u0131 ile tuzu halinde elde edilir.<br \/>\nDaha sonra elde edilen eritilmi\u015f tuzu (CeCl3) ve NaCl kar\u0131\u015f\u0131m\u0131n\u0131n grafit h\u00fccrede elektrolizi ile saf seryum elde edilir.<br \/>\nSeryum orta derecede toksik bir maddedir. 65-80 C de havada kendili\u011finde alev al\u0131r. \u00c7inko ile reaksiyonu sonucunda patlama olabilir. Bizmut ve antimon ile \u00e7ok ekzotermik reaksiyon verir. Yanma s\u0131ras\u0131nda a\u00e7\u0131\u011fa \u00e7\u0131kan gaz\u0131 toksiktir ve seryumun alev almas\u0131 halinde alev su ile s\u00f6nd\u00fcr\u00fclmemelidir. \u00c7\u00fcnk\u00fc su ile reaksiyona girerek hidrojen gaz\u0131 olu\u015fturur.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Sembol: Ce Atom numaras\u0131: 58 Atom a\u011f\u0131rl\u0131\u011f\u0131: 140.116 g\/mol Oda ko\u015fullar\u0131nda (25\u00b0C 298 K): G\u00fcm\u00fc\u015f\u00fcms\u00fc beyaz kat\u0131 metalik Lantanit serisi elementi f-blok elementi Seryum 1803 y\u0131l\u0131nda \u0130sve\u00e7\u2019 te J\u00f6ns Jacob Berzelius ve Wilhelm von Hisinger taraf\u0131ndan ke\u015ffedildi. Ayn\u0131 y\u0131l bu ke\u015fiften ba\u011f\u0131ms\u0131z olarak Almanya\u2019 da Martin Heinrich Klaproth taraf\u0131ndan da ke\u015ffedilmesi ilgin\u00e7 bir tesad\u00fcft\u00fcr. Seryum &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1407,1403],"tags":[4729,3992,3593,4730,4728],"class_list":["post-1719","post","type-post","status-publish","format-standard","hentry","category-fen-ve-teknoloji-odevleri","category-odevler","tag-ekstraksiyon","tag-elektroliz","tag-elementler","tag-hidrojen-gazi","tag-seryum"],"_links":{"self":[{"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/posts\/1719","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/comments?post=1719"}],"version-history":[{"count":0,"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/posts\/1719\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/media?parent=1719"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/categories?post=1719"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/tags?post=1719"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}