Elementler aras\u0131ndaki fiziksel ve kimyasal benzerliklerden esinlenerek bir \u00e7ok bilim adam\u0131 benzer elementlerin bir arada bulundu\u011fu tablolar haz\u0131rlam\u0131\u015flard\u0131r. Bug\u00fcnk\u00fc kulland\u0131\u011f\u0131m\u0131z periyodik cetvelin temelini 1869 y\u0131l\u0131nda atan Rus bilim adam\u0131 Dimitri Mendelev, elementlerin atom a\u011f\u0131rl\u0131klar\u0131na g\u00f6re s\u0131raland\u0131\u011f\u0131nda belli \u00f6zelliklerin tekrarland\u0131\u011f\u0131n\u0131 g\u00f6rm\u00fc\u015ft\u00fcr. Bundan yola \u00e7\u0131karak Mendelev bir periyodik cetvel haz\u0131rlam\u0131\u015ft\u0131r. Daha sonra bu cetvelde ki baz\u0131 noksanl\u0131klar\u0131 1919 y\u0131l\u0131nda Moseley, X \u0131\u015f\u0131nlar\u0131 ile yapt\u0131\u011f\u0131 deneyler sonucu atom a\u011f\u0131rl\u0131\u011f\u0131 yerine atom numaras\u0131n\u0131n s\u0131ralanmas\u0131yla daha uygun bir tablonun ortaya \u00e7\u0131kt\u0131\u011f\u0131n\u0131 kan\u0131tlam\u0131\u015ft\u0131r. Moseley\u2019 in tablosuna g\u00f6re ilk 20 elementin adlar\u0131 ve sembolleri tahtaya yaz\u0131larak, periyodik cetvel \u00fczerinde g\u00f6sterilecektir. Periyodik cetvelde yatay sat\u0131rlara \u201cperiyot\u201d ve d\u00fc\u015fey s\u00fctunlara da \u201cgrup\u201d denir. Periyodik cetvelde 7 tane periyot, 8 tane A grubu ve 10 tane B grubu olmak \u00fczere toplam 16 grup bulunur. Son y\u00f6r\u00fcngesinde ayn\u0131 say\u0131da elektron bulunduran elementler ayn\u0131 grupta yer al\u0131rlar. Son y\u00f6r\u00fcngesinde 1 elektron bulunduran elementler 1A, 2 elektron bulunduranlar 2A gibi. Son y\u00f6r\u00fcngedeki elektron say\u0131s\u0131na \u201cDe\u011ferlik elektronu\u201d denir. Ayn\u0131 grupta bulunan elementler benzer kimyasal \u00f6zellikler g\u00f6sterirler. 1A grubuna \u201cAlkali Metaller\u201d , 2A grubuna \u201cToprak Alkali Metaller\u201d , 7A grubuna \u201cHalojenler\u201d ve 8A grubuna \u201cSoy Gazlar (Asal Gazlar)\u201d ad\u0131 verilmi\u015ftir. Metaller, periyodik cetvelin sol taraf\u0131nda, ametaller, Hidrojen hari\u00e7, sa\u011f tarafta ve soy gazlar cetvelin en sa\u011f\u0131nda bulunurlar.<\/p>\n
Periyodik cetvelin \u00f6zellikleri<\/p>\n
Bir Grupta Yukar\u0131dan A\u015fa\u011f\u0131ya \u0130nildik\u00e7e ;<\/p>\n
Bir Periyotta Soldan Sa\u011fa Gidildik\u00e7e ;<\/p>\n
Atom ve K\u00fctle numaralar\u0131 artar.<\/p>\n
Atom numaras\u0131 ard\u0131\u015f\u0131k olarak artar.<\/p>\n
Enerji katman\u0131 say\u0131s\u0131 artar.<\/p>\n
Enerji katman\u0131 say\u0131s\u0131 de\u011fi\u015fmez.<\/p>\n
Metalik \u00f6zellik artar, ametallik \u00f6zellik azal\u0131r.<\/p>\n
Ametallik \u00f6zellik artar, metalik \u00f6zellik azal\u0131r.<\/p>\n
Atom hacmi ve atom \u00e7ap\u0131 artar.<\/p>\n
Atom hacmi ve atom \u00e7ap\u0131 k\u00fc\u00e7\u00fcl\u00fcr.<\/p>\n
En son y\u00f6r\u00fcngedeki elektron say\u0131s\u0131 de\u011fi\u015fmez.<\/p>\n
En son y\u00f6r\u00fcngesindeki elektron say\u0131s\u0131 artar.<\/p>\n
Metallerin elektron verme \u00f6zelli\u011fi artar.<\/p>\n
Ametallerin elektron alma \u00f6zellikleri azal\u0131r.<\/p>\n","protected":false},"excerpt":{"rendered":"
Elementler aras\u0131ndaki fiziksel ve kimyasal benzerliklerden esinlenerek bir \u00e7ok bilim adam\u0131 benzer elementlerin bir arada bulundu\u011fu tablolar haz\u0131rlam\u0131\u015flard\u0131r. Bug\u00fcnk\u00fc kulland\u0131\u011f\u0131m\u0131z periyodik cetvelin temelini 1869 y\u0131l\u0131nda atan Rus bilim adam\u0131 Dimitri Mendelev, elementlerin atom a\u011f\u0131rl\u0131klar\u0131na g\u00f6re s\u0131raland\u0131\u011f\u0131nda belli \u00f6zelliklerin tekrarland\u0131\u011f\u0131n\u0131 g\u00f6rm\u00fc\u015ft\u00fcr. Bundan yola \u00e7\u0131karak Mendelev bir periyodik cetvel haz\u0131rlam\u0131\u015ft\u0131r. Daha sonra bu cetvelde ki baz\u0131 noksanl\u0131klar\u0131 … Devam\u0131n\u0131 oku…<\/a><\/p>\n","protected":false},"author":1685,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15],"tags":[14190,14191],"class_list":["post-40945","post","type-post","status-publish","format-standard","hentry","category-fen-teknoloji","tag-periyodik-cetvel","tag-periyodik-cetvel-ozellikleri"],"_links":{"self":[{"href":"https:\/\/www.sorubak.com\/blog\/wp-json\/wp\/v2\/posts\/40945","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sorubak.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.sorubak.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.sorubak.com\/blog\/wp-json\/wp\/v2\/users\/1685"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sorubak.com\/blog\/wp-json\/wp\/v2\/comments?post=40945"}],"version-history":[{"count":0,"href":"https:\/\/www.sorubak.com\/blog\/wp-json\/wp\/v2\/posts\/40945\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.sorubak.com\/blog\/wp-json\/wp\/v2\/media?parent=40945"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.sorubak.com\/blog\/wp-json\/wp\/v2\/categories?post=40945"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sorubak.com\/blog\/wp-json\/wp\/v2\/tags?post=40945"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}