{"id":34,"date":"2023-07-26T19:06:03","date_gmt":"2023-07-26T19:06:03","guid":{"rendered":"https:\/\/chemuza.org\/pt\/estrutura-lewis-sf4\/"},"modified":"2023-07-26T19:06:03","modified_gmt":"2023-07-26T19:06:03","slug":"estrutura-lewis-sf4","status":"publish","type":"post","link":"https:\/\/chemuza.org\/pt\/estrutura-lewis-sf4\/","title":{"rendered":"Estrutura sf4 lewis em 5 etapas (com fotos)"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"650\" height=\"447\" src=\"https:\/\/chemuza.org\/wp-content\/uploads\/2023\/08\/structure-de-Lewis-SF4.jpg\" alt=\"Estrutura SF4 Lewis\" class=\"wp-image-288\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<p> Ent\u00e3o voc\u00ea j\u00e1 viu a imagem acima, certo?<\/p>\n<p> Deixe-me explicar brevemente a imagem acima.<\/p>\n<p> <strong><em><mark style=\"background-color:rgba(0, 0, 0, 0);color:#ff0000\" class=\"has-inline-color\">A estrutura SF4 Lewis possui um \u00e1tomo de enxofre (S) no centro que \u00e9 cercado por quatro \u00e1tomos de fl\u00faor (F). Existem 4 liga\u00e7\u00f5es simples entre o \u00e1tomo de Enxofre (S) e cada \u00e1tomo de Fl\u00faor (F). H\u00e1 1 par isolado no \u00e1tomo de enxofre (S) e 3 pares isolados nos quatro \u00e1tomos de fl\u00faor (F).<\/mark><\/em><\/strong><\/p>\n<p> Se voc\u00ea n\u00e3o entendeu nada da imagem acima da estrutura de Lewis do SF4, fique comigo e voc\u00ea obter\u00e1 uma explica\u00e7\u00e3o detalhada passo a passo sobre como desenhar uma estrutura de Lewis do <a href=\"https:\/\/webbook.nist.gov\/cgi\/inchi?ID=C7783600&amp;Mask=1\" target=\"_blank\" rel=\"noopener\">SF4<\/a> .<\/p>\n<p> Ent\u00e3o, vamos prosseguir para as etapas de desenho da <a href=\"https:\/\/chemuza.org\/pt\/definicoes-basicas-de-quimica\/\">estrutura de Lewis<\/a> do SF4.<\/p>\n<h2 class=\"wp-block-heading\"> <strong>Etapas de desenho da estrutura SF4 Lewis<\/strong><\/h2>\n<h3 class=\"wp-block-heading\"> <strong>Etapa 1: Encontre o n\u00famero total de el\u00e9trons de val\u00eancia na mol\u00e9cula de SF4<\/strong><\/h3>\n<p> Para encontrar o n\u00famero total <a href=\"https:\/\/chem.libretexts.org\/Courses\/Purdue\/Purdue%3A_Chem_26505%3A_Organic_Chemistry_I_(Lipton)\/Chapter_1._Electronic_Structure_and_Chemical_Bonding\/1.03_Valence_electrons_and_open_valences\" target=\"_blank\" rel=\"noopener\">de el\u00e9trons de val\u00eancia<\/a> <a href=\"https:\/\/chemuza.org\/pt\/definicoes-basicas-de-quimica\/\">na mol\u00e9cula de SF4<\/a> , primeiro voc\u00ea precisa conhecer os el\u00e9trons de val\u00eancia presentes <a href=\"https:\/\/chemuza.org\/pt\/definicoes-basicas-de-quimica\/\">no \u00e1tomo de enxofre<\/a> e tamb\u00e9m no \u00e1tomo de fl\u00faor.<br \/> (El\u00e9trons de val\u00eancia s\u00e3o os el\u00e9trons presentes na <a href=\"https:\/\/chemuza.org\/pt\/definicoes-basicas-de-quimica\/\">\u00f3rbita<\/a> mais externa de qualquer \u00e1tomo.)<\/p>\n<p> Aqui vou lhe dizer como encontrar facilmente os el\u00e9trons de val\u00eancia do enxofre e tamb\u00e9m do fl\u00faor usando uma <a href=\"https:\/\/chemuza.org\/pt\/definicoes-basicas-de-quimica\/\">tabela peri\u00f3dica<\/a> .<\/p>\n<p class=\"has-medium-font-size\"> <strong>El\u00e9trons totais de val\u00eancia na mol\u00e9cula de SF4<\/strong><\/p>\n<p> <strong>\u2192 El\u00e9trons de val\u00eancia dados pelo \u00e1tomo de enxofre:<\/strong> <\/p>\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"600\" height=\"300\" src=\"https:\/\/chemuza.org\/wp-content\/uploads\/2023\/08\/2-3.jpg\" alt=\"\" class=\"wp-image-66\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<p> <a href=\"https:\/\/chemuza.org\/pt\/definicoes-basicas-de-quimica\/\">O enxofre<\/a> \u00e9 um elemento <a href=\"https:\/\/chemuza.org\/pt\/definicoes-basicas-de-quimica\/\">do grupo 16<\/a> da tabela peri\u00f3dica. <a href=\"https:\/\/periodic.lanl.gov\/16.shtml\" target=\"_blank\" rel=\"noopener\"><sup>[1]<\/sup><\/a> Portanto, os el\u00e9trons de val\u00eancia presentes no enxofre s\u00e3o <strong>6<\/strong> . <\/p>\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"600\" height=\"273\" src=\"https:\/\/chemuza.org\/wp-content\/uploads\/2023\/08\/3-3.jpg\" alt=\"\" class=\"wp-image-67\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<p> Voc\u00ea pode ver os 6 el\u00e9trons de val\u00eancia presentes no \u00e1tomo de enxofre, conforme mostrado na imagem acima.<\/p>\n<p> <strong>\u2192 El\u00e9trons de val\u00eancia dados pelo \u00e1tomo de fl\u00faor:<\/strong> <\/p>\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"600\" height=\"302\" src=\"https:\/\/chemuza.org\/wp-content\/uploads\/2023\/08\/4-3.jpg\" alt=\"\" class=\"wp-image-195\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<p> <a href=\"https:\/\/chemuza.org\/pt\/definicoes-basicas-de-quimica\/\">A fluorita<\/a> \u00e9 um elemento <a href=\"https:\/\/chemuza.org\/pt\/definicoes-basicas-de-quimica\/\">do grupo 17<\/a> da tabela peri\u00f3dica. <a href=\"https:\/\/en.wikipedia.org\/wiki\/Fluorine\" target=\"_blank\" rel=\"noopener\"><sup>[2]<\/sup><\/a> Portanto, o el\u00e9tron de val\u00eancia presente na fluorita \u00e9 <strong>7<\/strong> . <\/p>\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"600\" height=\"231\" src=\"https:\/\/chemuza.org\/wp-content\/uploads\/2023\/08\/5-3.jpg\" alt=\"\" class=\"wp-image-196\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<p> Voc\u00ea pode ver os 7 el\u00e9trons de val\u00eancia presentes no \u00e1tomo de fl\u00faor, conforme mostrado na imagem acima.<\/p>\n<p> Ent\u00e3o,<\/p>\n<p> <strong>Total de el\u00e9trons de val\u00eancia na mol\u00e9cula de SF4<\/strong> = el\u00e9trons de val\u00eancia doados por 1 \u00e1tomo de enxofre + el\u00e9trons de val\u00eancia doados por 4 \u00e1tomos de fl\u00faor = <strong>6 + 7(4) = 34<\/strong> .<\/p>\n<h3 class=\"wp-block-heading\"> <strong>Passo 2: Selecione o \u00e1tomo central<\/strong><\/h3>\n<p> Para selecionar o \u00e1tomo central, devemos lembrar que o \u00e1tomo menos <a href=\"https:\/\/chemuza.org\/pt\/definicoes-basicas-de-quimica\/\">eletronegativo<\/a> permanece no centro.<\/p>\n<p> Agora, aqui a mol\u00e9cula dada \u00e9 SF4 e cont\u00e9m \u00e1tomos de enxofre (S) e \u00e1tomos de fl\u00faor (F). <\/p>\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"800\" height=\"478\" src=\"https:\/\/chemuza.org\/wp-content\/uploads\/2023\/08\/5.jpg\" alt=\"\" class=\"wp-image-29\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<p> Voc\u00ea pode ver os valores de eletronegatividade do \u00e1tomo de enxofre (S) e do \u00e1tomo de fl\u00faor (F) na tabela peri\u00f3dica acima.<\/p>\n<p> Se compararmos os valores de eletronegatividade do enxofre (S) e do fl\u00faor (F), ent\u00e3o o <a href=\"https:\/\/chemuza.org\/pt\/eletronegatividade-da-tabela-periodica\/\">\u00e1tomo de enxofre \u00e9 menos eletronegativo<\/a> .<\/p>\n<p> Aqui, o \u00e1tomo de enxofre (S) \u00e9 o \u00e1tomo central e os \u00e1tomos de fl\u00faor (F) s\u00e3o os \u00e1tomos externos. <\/p>\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"600\" height=\"228\" src=\"https:\/\/chemuza.org\/wp-content\/uploads\/2023\/08\/SF4-etape-1.webp\" alt=\"SF4 est\u00e1gio 1\" class=\"wp-image-289\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<h3 class=\"wp-block-heading\"> <strong>Etapa 3: Conecte cada \u00e1tomo colocando um par de el\u00e9trons entre eles<\/strong><\/h3>\n<p> Agora na mol\u00e9cula de SF4 devemos colocar os pares de el\u00e9trons entre o \u00e1tomo de enxofre (S) e os \u00e1tomos de fl\u00faor (F). <\/p>\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"600\" height=\"226\" src=\"https:\/\/chemuza.org\/wp-content\/uploads\/2023\/08\/SF4-etape-2.webp\" alt=\"SF4 est\u00e1gio 2\" class=\"wp-image-290\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<p> Isto indica que o enxofre (S) e o fl\u00faor (F) est\u00e3o <a href=\"http:\/\/hyperphysics.phy-astr.gsu.edu\/hbase\/Chemical\/bond.html\" target=\"_blank\" rel=\"noopener\">quimicamente ligados<\/a> entre si numa mol\u00e9cula de SF4.<\/p>\n<h3 class=\"wp-block-heading\"> <strong>Etapa 4: tornar os \u00e1tomos externos est\u00e1veis<\/strong><\/h3>\n<p> Nesta etapa voc\u00ea precisa verificar a estabilidade dos \u00e1tomos externos.<\/p>\n<p> Aqui no esbo\u00e7o da mol\u00e9cula de SF4 voc\u00ea pode ver que os \u00e1tomos externos s\u00e3o \u00e1tomos de fl\u00faor.<\/p>\n<p> Esses \u00e1tomos externos de fl\u00faor formam um <a href=\"https:\/\/doi.org\/10.1016\/S0010-8545(02)00102-9\" target=\"_blank\" rel=\"noopener\">octeto<\/a> e s\u00e3o, portanto, est\u00e1veis. <\/p>\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"600\" height=\"387\" src=\"https:\/\/chemuza.org\/wp-content\/uploads\/2023\/08\/SF4-etape-3.webp\" alt=\"SF4 est\u00e1gio 3\" class=\"wp-image-291\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<p> Al\u00e9m disso, na etapa 1, calculamos o n\u00famero total de el\u00e9trons de val\u00eancia presentes na mol\u00e9cula de SF4.<\/p>\n<p> A mol\u00e9cula de SF4 tem um total <strong>de 34 el\u00e9trons de val\u00eancia<\/strong> e destes, apenas <strong>32 el\u00e9trons de val\u00eancia<\/strong> s\u00e3o usados no diagrama acima.<\/p>\n<p> Portanto, o n\u00famero de el\u00e9trons restantes = <strong>34 \u2013 32 = 2<\/strong> .<\/p>\n<p> Voc\u00ea precisa colocar esses <strong>2<\/strong> el\u00e9trons no \u00e1tomo de enxofre central no diagrama acima da mol\u00e9cula de SF4. <\/p>\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"600\" height=\"325\" src=\"https:\/\/chemuza.org\/wp-content\/uploads\/2023\/08\/SF4-etape-4.webp\" alt=\"SF4 est\u00e1gio 4\" class=\"wp-image-292\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<p> Agora vamos passar para a pr\u00f3xima etapa.<\/p>\n<h3 class=\"wp-block-heading\"> <strong>Passo 5: Verifique a estabilidade da estrutura de Lewis<\/strong><\/h3>\n<p> Agora voc\u00ea chegou \u00e0 \u00faltima etapa em que precisa verificar a estabilidade da estrutura de Lewis do SF4.<\/p>\n<p> A estabilidade da estrutura de Lewis pode ser verificada usando um conceito <a href=\"https:\/\/en.wikipedia.org\/wiki\/Formal_charge\" target=\"_blank\" rel=\"noopener\">formal de carga<\/a> .<\/p>\n<p> Resumindo, devemos agora encontrar a carga formal dos \u00e1tomos de enxofre (S), bem como dos \u00e1tomos de fl\u00faor (F) presentes na mol\u00e9cula de SF4.<\/p>\n<p> Para calcular o imposto formal, deve-se utilizar a seguinte f\u00f3rmula:<\/p>\n<p class=\"has-background\" style=\"background-color:#ffe9cf\"> <strong>Carga formal = El\u00e9trons de val\u00eancia \u2013 (El\u00e9trons ligantes)\/2 \u2013 El\u00e9trons n\u00e3o ligantes<\/strong><\/p>\n<p> Voc\u00ea pode ver o n\u00famero de <a href=\"https:\/\/chemuza.org\/pt\/definicoes-basicas-de-quimica\/\">el\u00e9trons ligantes<\/a> e <a href=\"https:\/\/chemuza.org\/pt\/definicoes-basicas-de-quimica\/\">el\u00e9trons n\u00e3o ligantes<\/a> para cada \u00e1tomo da mol\u00e9cula de SF4 na imagem abaixo. <\/p>\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"600\" height=\"327\" src=\"https:\/\/chemuza.org\/wp-content\/uploads\/2023\/08\/SF4-etape-5.webp\" alt=\"SF4 est\u00e1gio 5\" class=\"wp-image-293\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<p> <strong>Para o \u00e1tomo de Enxofre (S):<\/strong><strong><br \/><\/strong> El\u00e9trons de val\u00eancia = 6 (porque o enxofre est\u00e1 no grupo 16)<strong><br \/><\/strong> El\u00e9trons de liga\u00e7\u00e3o = 8<br \/> El\u00e9trons n\u00e3o ligantes = 2<\/p>\n<p> <strong>Para o \u00e1tomo de fl\u00faor (F):<\/strong><br \/> Val\u00eancia eletr\u00f4nica = 7 (porque o fl\u00faor est\u00e1 no grupo 17)<br \/> El\u00e9trons de liga\u00e7\u00e3o = 2<br \/> El\u00e9trons n\u00e3o ligantes = 6 <\/p>\n<figure class=\"wp-block-table\">\n<table>\n<tbody>\n<tr>\n<td class=\"has-text-align-center\" data-align=\"center\"> <strong>Acusa\u00e7\u00e3o formal<\/strong><\/td>\n<td> <strong>=<\/strong><\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <strong>el\u00e9trons de val\u00eancia<\/strong><\/td>\n<td> <strong>\u2013<\/strong><\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <strong>(El\u00e9trons de liga\u00e7\u00e3o)\/2<\/strong><\/td>\n<td> <strong>\u2013<\/strong><\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <strong>El\u00e9trons n\u00e3o ligantes<\/strong> <\/td>\n<td><\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"><\/td>\n<\/tr>\n<tr>\n<td class=\"has-text-align-center\" data-align=\"center\"> S<\/td>\n<td> =<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 6<\/td>\n<td> \u2013<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 02\/08<\/td>\n<td> \u2013<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 2<\/td>\n<td> =<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <strong>0<\/strong><\/td>\n<\/tr>\n<tr>\n<td class=\"has-text-align-center\" data-align=\"center\"> F<\/td>\n<td> =<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 7<\/td>\n<td> \u2013<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 2\/2<\/td>\n<td> \u2013<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> 6<\/td>\n<td> =<\/td>\n<td class=\"has-text-align-center\" data-align=\"center\"> <strong>0<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p> A partir dos c\u00e1lculos de carga formal acima, voc\u00ea pode ver que o <a href=\"https:\/\/chemuza.org\/pt\/definicoes-basicas-de-quimica\/\">\u00e1tomo de enxofre (S)<\/a> , assim como <a href=\"https:\/\/chemuza.org\/pt\/definicoes-basicas-de-quimica\/\">o \u00e1tomo de fl\u00faor (F),<\/a> t\u00eam carga formal <strong>\u201czero\u201d<\/strong> .<\/p>\n<p> Isto indica que a estrutura de Lewis do SF4 acima \u00e9 est\u00e1vel e n\u00e3o h\u00e1 mais altera\u00e7\u00f5es na estrutura do SF4 acima.<\/p>\n<p> Na estrutura de pontos de Lewis do SF4 acima, voc\u00ea tamb\u00e9m pode representar cada par de el\u00e9trons de liga\u00e7\u00e3o (:) como uma liga\u00e7\u00e3o simples (|). Ao fazer isso, voc\u00ea obter\u00e1 a seguinte estrutura de Lewis do SF4. <\/p>\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"600\" height=\"288\" src=\"https:\/\/chemuza.org\/wp-content\/uploads\/2023\/08\/structure-de-Lewis-de-SF4.jpg\" alt=\"Estrutura de Lewis do SF4\" class=\"wp-image-294\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<p> Espero que voc\u00ea tenha entendido completamente todas as etapas acima.<\/p>\n<p> Para mais pr\u00e1tica e melhor compreens\u00e3o, voc\u00ea pode tentar outras estruturas de Lewis listadas abaixo.<\/p>\n<style>\n.wp-block-table table, .wp-block-table td, .wp-block-table th {\n    border: 0;\n}\n<\/style>\n<p><strong>Experimente (ou pelo menos veja) estas estruturas de Lewis para uma melhor compreens\u00e3o:<\/strong><\/p>\n<figure class=\"wp-block-table\">\n<table>\n<tbody>\n<tr>\n<td> <a href=\"https:\/\/chemuza.org\/pt\/estrutura-h2s-lewis\/\">Estrutura H2S Lewis<\/a><\/td>\n<td> <a href=\"https:\/\/chemuza.org\/pt\/estrutura-de-2-lewis\/\">Estrutura OF2 Lewis<\/a><\/td>\n<\/tr>\n<tr>\n<td> <a href=\"https:\/\/chemuza.org\/pt\/estrutura-lewis-nf3\/\">Estrutura de Lewis NF3<\/a><\/td>\n<td> <a href=\"https:\/\/chemuza.org\/pt\/estrutura-ccl4-lewis\/\">Estrutura de Lewis CCl4<\/a><\/td>\n<\/tr>\n<tr>\n<td> <a href=\"https:\/\/chemuza.org\/pt\/estrutura-de-lewis-cs2\/\">Estrutura de Lewis CS2<\/a><\/td>\n<td> <a href=\"https:\/\/chemuza.org\/pt\/estrutura-de-lewis-sf6\/\">Estrutura SF6 Lewis<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Ent\u00e3o voc\u00ea j\u00e1 viu a imagem acima, certo? Deixe-me explicar brevemente a imagem acima. A estrutura SF4 Lewis possui um \u00e1tomo de enxofre (S) no centro que \u00e9 cercado por quatro \u00e1tomos de fl\u00faor (F). Existem 4 liga\u00e7\u00f5es simples entre o \u00e1tomo de Enxofre (S) e cada \u00e1tomo de Fl\u00faor (F). H\u00e1 1 par isolado &#8230; <a title=\"Estrutura sf4 lewis em 5 etapas (com fotos)\" class=\"read-more\" href=\"https:\/\/chemuza.org\/pt\/estrutura-lewis-sf4\/\" aria-label=\"Mais em Estrutura sf4 lewis em 5 etapas (com fotos)\">Ler mais<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[],"class_list":["post-34","post","type-post","status-publish","format-standard","hentry","category-estrutura-de-lewis"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Estrutura SF4 Lewis em 5 etapas (com fotos) - 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\/pt\/estrutura-lewis-sf4\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Estrutura SF4 Lewis em 5 etapas (com fotos) - Chemuza\" \/>\n<meta property=\"og:description\" content=\"Ent\u00e3o voc\u00ea j\u00e1 viu a imagem acima, certo? Deixe-me explicar brevemente a imagem acima. A estrutura SF4 Lewis possui um \u00e1tomo de enxofre (S) no centro que \u00e9 cercado por quatro \u00e1tomos de fl\u00faor (F). Existem 4 liga\u00e7\u00f5es simples entre o \u00e1tomo de Enxofre (S) e cada \u00e1tomo de Fl\u00faor (F). H\u00e1 1 par isolado ... 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