{"id":87138,"date":"2023-01-31T18:00:00","date_gmt":"2023-01-31T21:00:00","guid":{"rendered":"https:\/\/vestibulares.estrategia.com\/portal\/?p=87138"},"modified":"2024-04-03T10:48:15","modified_gmt":"2024-04-03T13:48:15","slug":"ligacao-dativa","status":"publish","type":"post","link":"https:\/\/vestibulares.estrategia.com\/portal\/materias\/quimica\/ligacao-dativa\/","title":{"rendered":"Liga\u00e7\u00e3o dativa: o que \u00e9 esse compartilhamento de el\u00e9trons"},"content":{"rendered":"<p class=\"wp-block-paragraph\"><span id=\"urn:local-annotation-520679\" class=\"textannotation disambiguated\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/ligacao-dativa\">Liga&ccedil;&atilde;o dativa<\/span>, tamb&eacute;m denominada como &ldquo;coordenada&rdquo; &eacute; um tipo de conex&atilde;o <span id=\"urn:enhancement-082b686a-b682-4acb-8528-a38c573453c8\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/quimica\">qu&iacute;mica<\/span> covalente que ocorre de uma forma diferente do que &eacute; observado na liga&ccedil;&atilde;o covalente normal. Nesse caso, o <span id=\"urn:enhancement-8b57dcba-30e5-412c-a5cb-d07f7d2fa7c4\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/par-de-eletrons\">par de el&eacute;trons<\/span> compartilhado &eacute; de apenas um dos &aacute;tomos da mol&eacute;cula.&nbsp;<p class=\"wp-block-paragraph\">Neste texto, voc&ecirc; aprender&aacute; mais sobre a liga&ccedil;&atilde;o covalente dativa, quais s&atilde;o os <span id=\"urn:enhancement-dc51d1f8-81fc-4a11-a1f2-bf6820b45c79\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/elementos-quimicos\">elementos qu&iacute;micos<\/span> da <span id=\"urn:enhancement-490ca64b-ca8e-41e5-b504-761178759176\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/tabela-periodica\">tabela peri&oacute;dica<\/span> que podem estabelecer esse tipo de conex&atilde;o e quais s&atilde;o as principais mol&eacute;culas do cotidiano que s&atilde;o formadas a partir dessa intera&ccedil;&atilde;o.&nbsp;<\/p><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 counter-hierarchy ez-toc-counter ez-toc-transparent ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\"><p class=\"ez-toc-title\" style=\"cursor:inherit\">Navegue pelo conte\u00fado<\/p>\n<\/div><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/vestibulares.estrategia.com\/portal\/materias\/quimica\/ligacao-dativa\/#O-que-e-ligacao-dativa\" >O que &eacute; liga&ccedil;&atilde;o dativa?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/vestibulares.estrategia.com\/portal\/materias\/quimica\/ligacao-dativa\/#Quais-elementos-fazem-ligacao-dativa\" >Quais elementos fazem liga&ccedil;&atilde;o dativa?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/vestibulares.estrategia.com\/portal\/materias\/quimica\/ligacao-dativa\/#Principais-substancias-com-ligacao-dativa\" >Principais subst&acirc;ncias com liga&ccedil;&atilde;o dativa<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/vestibulares.estrategia.com\/portal\/materias\/quimica\/ligacao-dativa\/#Aprenda-ainda-mais-com-a-Coruja\" >Aprenda ainda mais com a Coruja!<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\" id=\"h-o-que-e-ligacao-dativa\"><span class=\"ez-toc-section\" id=\"O-que-e-ligacao-dativa\"><\/span>O que &eacute; liga&ccedil;&atilde;o dativa?<span class=\"ez-toc-section-end\"><\/span><\/h2><p class=\"wp-block-paragraph\">Vamos estudar as <a href=\"https:\/\/www.youtube.com\/watch?v=Q-_xqxc9sCk\" target=\"_blank\">liga&ccedil;&otilde;es qu&iacute;micas<\/a> covalentes e, depois, aprofundar o conhecimento a respeito das liga&ccedil;&otilde;es covalentes dativas. Assim, ficar&aacute; mais f&aacute;cil compreender e diferenciar essas intera&ccedil;&otilde;es at&ocirc;micas.&nbsp;<\/p><h3 class=\"wp-block-heading\" id=\"h-ligacao-covalente\">Liga&ccedil;&atilde;o covalente<\/h3><p class=\"wp-block-paragraph\">A liga&ccedil;&atilde;o covalente entre &aacute;tomos acontece quando dois &aacute;tomos compartilham el&eacute;trons aos pares, de forma que ambos fiquem com suas &oacute;rbitas eletr&ocirc;nicas completas. &Eacute; o que acontece na forma&ccedil;&atilde;o do <span id=\"urn:enhancement-cc80eddb-a394-44c3-a663-73bf70a8e005\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/carbonila\">CO<\/span><sub>2<\/sub>, por exemplo, quando o <span id=\"urn:enhancement-80c8c3b4-b3a9-4250-9d39-63e19b1f0411\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/carbono\">carbono<\/span> forma dois pares eletr&ocirc;nicos com cada &aacute;tomo de <span id=\"urn:enhancement-8d819dba-2677-4df6-847d-955b8ab83c12\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/oxigenio\">oxig&ecirc;nio<\/span>.&nbsp;<\/p><div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/lh6.googleusercontent.com\/hRjmevujAJDF6EhdCIPX8dV2UripEfOIBnFXGKeUXGNAM4HAm57xLUIb0kAtKBTffS88aM-hrs3LDsFCG0fZMT12pLIcprHeOkBv9PVFlS2VeYCfOosJsvtOFSKQ8zYBH9bmwz9urkyGevMV4wuTsE8\" alt=\"representa&ccedil;&atilde;o de liga&ccedil;&atilde;o dativa\"><figcaption class=\"wp-element-caption\">Imagem: Reprodu&ccedil;&atilde;o\/Wikimedia<\/figcaption><\/figure>\n<\/div><p class=\"wp-block-paragraph\">Nesse tipo de intera&ccedil;&atilde;o, o <span id=\"urn:enhancement-be3b7fa7-9136-48c3-a7eb-9ff8f9cd7331\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/par-de-eletrons\">par de el&eacute;trons<\/span> entra na <span id=\"urn:enhancement-3a265df0-b317-46bc-a9f7-3b44b10618e1\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/adicao\">soma<\/span> de ambos os &aacute;tomos. O <span id=\"urn:enhancement-eac1ac2a-8491-4cb9-95e0-bbaf8de846dd\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/carbono\">carbono<\/span> possui quatro el&eacute;trons na &uacute;ltima camada orbital, a cada <span id=\"urn:enhancement-601a1102-1c8e-4320-98df-2b894981e660\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/par-de-eletrons\">par de el&eacute;trons<\/span> estabelecido com o <span id=\"urn:enhancement-46be2b7d-cba5-4537-8b82-83ce5cfb1897\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/oxigenio\">oxig&ecirc;nio<\/span>, aumenta-se em 1 o n&uacute;mero de el&eacute;trons na &oacute;rbita carb&ocirc;nica. Perceba, ent&atilde;o que, com os quatro compartilhamentos chega-se a 8 <span id=\"urn:enhancement-c53067a4-d747-417b-b5d6-3e79f0ea37b2\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/particulas\">part&iacute;culas<\/span> negativas, o valor ideal para a estabiliza&ccedil;&atilde;o at&ocirc;mica.&nbsp;<\/p><p class=\"wp-block-paragraph\">No caso do <span id=\"urn:enhancement-71d00e25-0729-4332-a9f3-0f46706fe21c\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/oxigenio\">oxig&ecirc;nio<\/span>, existem 6 el&eacute;trons na camada orbital. Ent&atilde;o, com a forma&ccedil;&atilde;o de dois pares eletr&ocirc;nicos (cada um com 1 el&eacute;tron do C e 1 el&eacute;tron do O), aumenta-se em dois o n&uacute;mero de el&eacute;trons da &uacute;ltima camada, estabilizando a mol&eacute;cula.<\/p><div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/lh6.googleusercontent.com\/_Zqx_bCpKhoBPb1QaJoX5MJ8J4gR_1asqUL9n1YwMLGU729YcmhU_VyVgQvYqo_pQd58png6pohaMMapX9S_PLVDMA2sb97qWZSj4ToCBAPEHDmY5fikMO7K-qloiZxBGFsSor0uAsANUsjBoqdxgDU\" alt=\"Exemplos de liga&ccedil;&atilde;o dativa\"><figcaption class=\"wp-element-caption\">Imagem: Reprodu&ccedil;&atilde;o\/Wikimedia<\/figcaption><\/figure>\n<\/div><p class=\"wp-block-paragraph\">Na imagem acima, s&atilde;o apresentados outros exemplos de liga&ccedil;&otilde;es covalentes. Perceba que todos os compartilhamentos eletr&ocirc;nicos, que ficam na regi&atilde;o de intersec&ccedil;&atilde;o entre os &aacute;tomos, est&atilde;o determinados aos pares. As mol&eacute;culas formadas, nesses casos, s&atilde;o:<\/p><ol class=\"wp-block-list\">\n<li>O<sub>2<\/sub>, o g&aacute;s oxig&ecirc;nio;<\/li>\n\n\n\n<li>H<sub>2<\/sub>O,&nbsp; a mol&eacute;cula de &aacute;gua;<\/li>\n\n\n\n<li>HCl, o &aacute;cido clor&iacute;drico;<\/li>\n\n\n\n<li>CO<sub>2<\/sub>, o j&aacute; mencionado g&aacute;s carb&ocirc;nico ou di&oacute;xido de carbono;<\/li>\n\n\n\n<li>N<sub>2<\/sub>, o g&aacute;s nitrog&ecirc;nio; e&nbsp;<\/li>\n\n\n\n<li>NO, o mon&oacute;xido de nitrog&ecirc;nio.<\/li>\n<\/ol><h3 class=\"wp-block-heading\" id=\"h-ligacao-covalente-dativa-ou-coordenada\">Liga&ccedil;&atilde;o covalente dativa ou coordenada<\/h3><p class=\"wp-block-paragraph\">Diferentemente do que vimos at&eacute; aqui, as <a href=\"https:\/\/vestibulares.estrategia.com\/portal\/materias\/quimica\/ligacoes-quimicas\/\" target=\"_blank\">liga&ccedil;&otilde;es qu&iacute;micas <\/a>covalentes dativas acontecem com o compartilhamento de el&eacute;trons de um s&oacute; &aacute;tomo. Nesse caso, um <span id=\"urn:enhancement-5173fcbf-a8d1-4356-92aa-12c9894529df\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/par-de-eletrons\">par de el&eacute;trons<\/span> do &aacute;tomo X &eacute; compartilhado com a &oacute;rbita de outro &aacute;tomo Y, mas n&atilde;o h&aacute; a participa&ccedil;&atilde;o dos &aacute;tomos de Y e, por isso, a contagem eletr&ocirc;nica de X n&atilde;o &eacute; alterada.&nbsp;<\/p><p class=\"wp-block-paragraph\">Voc&ecirc; pode pensar nisso como um &ldquo;compartilhamento sem inten&ccedil;&otilde;es&rdquo;, afinal, X cede parte de sua carga negativa sem receber nada em troca na intera&ccedil;&atilde;o com Y. Veja a imagem abaixo e acompanhe a explica&ccedil;&atilde;o que se segue.&nbsp;<\/p><div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/lh4.googleusercontent.com\/njXbmYhDFp7pSZzqhQN1sdiIsV64c7mCOFZ5n9u4gyVUz8PfkFlj4OqX4B6gWyLbfDG6kWAovkT-RbI7vfQhb3pbLAWiZs6Mk28woC_njdu5FGiJl-xbnIFAp1vGDN89Q_Dthk_UxT2w8-rMhvY2zaA\" alt=\"Rea&ccedil;&atilde;o qu&iacute;mica que forma liga&ccedil;&atilde;o dativa\"><figcaption class=\"wp-element-caption\">Imagem: Reprodu&ccedil;&atilde;o\/Wikimedia<\/figcaption><\/figure>\n<\/div><p class=\"wp-block-paragraph\">A <span id=\"urn:enhancement-79a19878-7109-4c0f-969e-947361e7f73d\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/reacao-quimica\">rea&ccedil;&atilde;o qu&iacute;mica<\/span> demonstra o processo qu&iacute;mico de forma&ccedil;&atilde;o do &iacute;on am&ocirc;nio (NH<sub>4<\/sub><sup>+<\/sup>). Perceba que, o primeiro <span id=\"urn:enhancement-552e4984-a982-46a1-9c88-c8818994538d\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/reagentes\">reagente<\/span> &eacute; a am&ocirc;nia (NH<sub>3<\/sub>). O nitrog&ecirc;nio possui 5 el&eacute;trons na camada orbital, de forma que tr&ecirc;s deles est&atilde;o em compartilhamento covalente com &aacute;tomos de <span id=\"urn:enhancement-2b97518a-6850-440a-9ff5-4819a21cdf12\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/hidrogenio\">hidrog&ecirc;nio<\/span>, enquanto que dois est&atilde;o &ldquo;soltos&rdquo;.<\/p><p class=\"wp-block-paragraph\">O <span id=\"urn:enhancement-573ecd2e-fdfa-45bd-8ac3-cd23e49351f3\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/hidrogenio\">hidrog&ecirc;nio<\/span> e o <span id=\"urn:enhancement-f75c1740-62c9-42d2-8c6e-143f5780e2ea\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/helio\">h&eacute;lio<\/span>, diferente de outros <span id=\"urn:enhancement-a1a78a75-a1a7-49d1-9257-01ca54105fe8\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/elementos-quimicos\">elementos qu&iacute;micos<\/span>, precisam de apenas dois el&eacute;trons na camada de val&ecirc;ncia para encontrar estabilidade. Ent&atilde;o, observe que a mol&eacute;cula de am&ocirc;nia &eacute; um composto est&aacute;vel eletricamente.&nbsp;<\/p><p class=\"wp-block-paragraph\">Apesar disso, quando adicionada em um sistema que possui &iacute;ons <span id=\"urn:enhancement-bada4776-7fbd-441c-b1f6-486c849578ec\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/hidrogenio\">hidrog&ecirc;nio<\/span> (H<sup>+<\/sup>), haver&aacute; uma atra&ccedil;&atilde;o entre o <span id=\"urn:enhancement-e20c86e2-68ad-47df-bcd9-cf127049e0e2\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/par-de-eletrons\">par de el&eacute;trons<\/span> solto do nitrog&ecirc;nio com o c&aacute;tion. Mesmo assim, sabemos que o nitrog&ecirc;nio e os hidrog&ecirc;nios da am&ocirc;nia n&atilde;o precisam de mais ou menos el&eacute;trons para se estabelecer na <span id=\"urn:enhancement-65336c02-1db7-4e30-b46e-a68b980bd156\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/atmosfera\">atmosfera<\/span>.&nbsp;<\/p><p class=\"wp-block-paragraph\">Por essa raz&atilde;o, a atra&ccedil;&atilde;o favorece um compartilhamento de el&eacute;trons, mas que n&atilde;o altere a quantidade de <span id=\"urn:enhancement-457b3f16-ae24-4956-bb63-3714ed325200\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/particulas\">part&iacute;culas<\/span> negativas dos &aacute;tomos j&aacute; estabilizados. &Eacute; por isso que os el&eacute;trons do nitrog&ecirc;nio entrar&atilde;o para a &oacute;rbita do &iacute;on <span id=\"urn:enhancement-bf98c96d-6417-434d-a811-bfa5c6a5c112\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/hidrogenio\">hidrog&ecirc;nio<\/span>, de forma a deix&aacute;-lo neutro. Na rea&ccedil;&atilde;o, isso &eacute; representado pelo vetor vertical para cima que liga os el&eacute;trons ao H, no lado dos produtos.&nbsp;<\/p><p class=\"wp-block-paragraph\">+ Veja tamb&eacute;m: <a href=\"https:\/\/vestibulares.estrategia.com\/portal\/materias\/quimica\/ligacoes-metalicas\/\" target=\"_blank\">Liga&ccedil;&otilde;es met&aacute;licas: o que s&atilde;o, caracter&iacute;sticas, quest&otilde;es<\/a><\/p><h2 class=\"wp-block-heading\" id=\"h-quais-elementos-fazem-ligacao-dativa\"><span class=\"ez-toc-section\" id=\"Quais-elementos-fazem-ligacao-dativa\"><\/span>Quais elementos fazem liga&ccedil;&atilde;o dativa?<span class=\"ez-toc-section-end\"><\/span><\/h2><p class=\"wp-block-paragraph\">Os &aacute;tomos da fam&iacute;lia 15 da <span id=\"urn:enhancement-d0443c13-361e-4dc3-8630-edb39f2a1a55\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/tabela-periodica\">tabela peri&oacute;dica<\/span>, entre eles, o nitrog&ecirc;nio e o f&oacute;sforo, possuem 5 el&eacute;trons na &uacute;ltima camada. Para estabiliza&ccedil;&atilde;o, precisam de apenas tr&ecirc;s el&eacute;trons a mais, ent&atilde;o podem fazer tr&ecirc;s liga&ccedil;&otilde;es covalentes. Com isso, apenas um <span id=\"urn:enhancement-8621d911-2ec2-41d6-a80d-2662f10907cf\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/par-de-eletrons\">par de el&eacute;trons<\/span> fica dispon&iacute;vel para a realiza&ccedil;&atilde;o de liga&ccedil;&atilde;o dativa.&nbsp;<\/p><p class=\"wp-block-paragraph\">Os <span id=\"urn:enhancement-ce5e14e7-b620-4dfc-a28a-ca9479d5d772\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/elementos-quimicos\">elementos qu&iacute;micos<\/span> da fam&iacute;lia 16, por sua vez, possuem 6 el&eacute;trons na &uacute;ltima camada. Por isso, compartilham dois de seus el&eacute;trons em pares covalentes. Assim, sobram dois pares de el&eacute;trons na &uacute;ltima camada, assim, podem fazer at&eacute; duas liga&ccedil;&otilde;es dativas em uma s&oacute; mol&eacute;cula.&nbsp;<\/p><p class=\"wp-block-paragraph\">Por fim, os elementos da fam&iacute;lia 17 s&atilde;o caracterizados por 7 el&eacute;trons na camada orbital mais externa, ent&atilde;o s&oacute; participam de um &uacute;nico par eletr&ocirc;nico covalente. Assim, sobram 3 pares eletr&ocirc;nicos, possibilitando o estabelecimento de tr&ecirc;s conex&otilde;es dativas com outros &aacute;tomos.&nbsp;<\/p><p class=\"wp-block-paragraph\">A fam&iacute;lia 14 da <span id=\"urn:enhancement-d6c4fd16-72a3-4cd4-ae91-383326f982dd\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/tabela-periodica\">tabela peri&oacute;dica<\/span> n&atilde;o pode fazer liga&ccedil;&atilde;o dativa, j&aacute; que todos os seus el&eacute;trons precisam ser compartilhados para que mol&eacute;cula atinja 8 el&eacute;trons na camada de val&ecirc;ncia. Como &eacute; o caso do <span id=\"urn:enhancement-184f3a85-5320-42cd-8cbe-5332d7ea06ca\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/carbono\">carbono<\/span>, t&atilde;o presente nos <span id=\"urn:enhancement-f25e325b-d209-4833-90c7-15f7acd1d9df\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/compostos-organicos\">compostos org&acirc;nicos<\/span>.<\/p><h2 class=\"wp-block-heading\" id=\"h-principais-substancias-com-ligacao-dativa\"><span class=\"ez-toc-section\" id=\"Principais-substancias-com-ligacao-dativa\"><\/span>Principais subst&acirc;ncias com liga&ccedil;&atilde;o dativa<span class=\"ez-toc-section-end\"><\/span><\/h2><p class=\"wp-block-paragraph\">O tri&oacute;xido de enxofre (SO<sub>3<\/sub>) &eacute; uma mol&eacute;cula que faz liga&ccedil;&atilde;o dativa, de forma que o &aacute;tomo de enxofre cede um <span id=\"urn:enhancement-936ae48e-7124-4796-a183-8f1f0be8f7fa\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/par-de-eletrons\">par de el&eacute;trons<\/span> para estabilizar a &oacute;rbita de um dos &aacute;tomos de <span id=\"urn:enhancement-04c7f8a6-063b-4812-a869-c68eedbb1fe9\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/oxigenio\">oxig&ecirc;nio<\/span>. Enquanto isso, os outros oxig&ecirc;nios est&atilde;o ligados ao &aacute;tomo por liga&ccedil;&otilde;es covalentes simples.&nbsp; Esse composto &eacute; constituinte da <span id=\"urn:enhancement-29a0ff7b-8b6c-4e76-a976-26b062288dfb\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/chuva-acida\">chuva &aacute;cida<\/span>, que atinge os locais mais urbanizados e polu&iacute;dos.<\/p><p class=\"wp-block-paragraph\">O enxofre (S) participa, ainda, de uma mol&eacute;cula com liga&ccedil;&atilde;o dativa muito conhecida pela elevada acidez. Nesse caso, o enxofre faz a liga&ccedil;&atilde;o covalente com dois &aacute;tomos de <span id=\"urn:enhancement-8ac774ae-caeb-4785-b3f6-56117f234a40\" class=\"textannotation disambiguated wl-creative-work\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/oxigenio\">oxig&ecirc;nio<\/span>, enquanto que os outros dois O recebem o <span id=\"urn:enhancement-4961c1eb-b398-4ef6-8d59-c2679c1bff25\" class=\"textannotation disambiguated wl-thing\" itemid=\"https:\/\/data.wordlift.io\/wl110249\/entity\/par-de-eletrons\">par de el&eacute;trons<\/span> de forma dativa, a partir do S.&nbsp;<\/p><div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/lh4.googleusercontent.com\/FD_WyInV8Qgy8OLFs1vAk7eEg-ihS-MAZhffPPw9Ir9GIP6KDbbKnNE9MgMdJYhSkGBK-pqVHk_WiyXOyUX0Mpv5l2SSud7hau_01NtX_4m9DKnSvBvRxqvju58FLD2eS-fhYwXnObjDn8yp_o1RM3Y\" alt=\"Forma&ccedil;&atilde;o do &aacute;cido sulf&uacute;rico\"><figcaption class=\"wp-element-caption\">Imagem: Reprodu&ccedil;&atilde;o\/Wikimedia<\/figcaption><\/figure>\n<\/div><p class=\"wp-block-paragraph\">Na mol&eacute;cula de H<sub>2<\/sub>SO<sub>4,<\/sub>, observe, por meio das cores dos el&eacute;trons (pontinhos) na representa&ccedil;&atilde;o de Lewis, que dois pares de el&eacute;trons do enxofre, em vermelho, completam a &oacute;rbita dos oxig&ecirc;nios que est&atilde;o posicionadas na vertical, nesta representa&ccedil;&atilde;o.<\/p><h2 class=\"wp-block-heading\" id=\"h-aprenda-ainda-mais-com-a-coruja\"><span class=\"ez-toc-section\" id=\"Aprenda-ainda-mais-com-a-Coruja\"><\/span>Aprenda ainda mais com a Coruja!<span class=\"ez-toc-section-end\"><\/span><\/h2><p class=\"wp-block-paragraph\">Quer treinar seu conhecimento com exerc&iacute;cios de prova? Conhe&ccedil;a o banco de quest&otilde;es do Estrat&eacute;gia Vestibulares. Nos cursos extensivos e intensivos, voc&ecirc; tamb&eacute;m encontra simulados, livros did&aacute;ticos digitais e interativos, aulas gravadas com professores especializados, f&oacute;rum de d&uacute;vidas e corre&ccedil;&atilde;o de reda&ccedil;&atilde;o. Clique no banner abaixo e confira nossos produtos.<\/p><p class=\"wp-block-paragraph\"><a id=\"cta\" class=\"cta-imagem\" href=\"https:\/\/vestibulares.estrategia.com\/cursos\/\" target=\"blank\">\n                <img decoding=\"async\" width=\"100%\" src=\"https:\/\/vestibulares.estrategia.com\/portal\/wp-content\/uploads\/2021\/12\/EV1.jpg\" alt=\"CTA - Estrat\u00e9gia Vestibulares 1\" title=\"CTA - Estrat\u00e9gia Vestibulares 1\">\n        <\/a>\n\n\n\n\n<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"Liga&ccedil;&atilde;o dativa, tamb&eacute;m denominada como &ldquo;coordenada&rdquo; &eacute; um tipo de conex&atilde;o qu&iacute;mica covalente que ocorre de uma forma&hellip;\n","protected":false},"author":23,"featured_media":87139,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[38],"tags":[],"class_list":["post-87138","post","type-post","status-publish","format-standard","has-post-thumbnail","category-quimica"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.9 (Yoast SEO v28.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Liga\u00e7\u00e3o dativa: o que \u00e9 esse compartilhamento de el\u00e9trons<\/title>\n<meta name=\"description\" content=\"Aprenda sobre a liga\u00e7\u00e3o dativa, quais s\u00e3o os elementos qu\u00edmicos da tabela peri\u00f3dica que podem estabelecer esse tipo de conex\u00e3o e muito mais.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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