{"id":19926,"date":"2024-04-15T05:46:05","date_gmt":"2024-04-15T05:46:05","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=19926"},"modified":"2024-04-15T05:46:05","modified_gmt":"2024-04-15T05:46:05","slug":"benzene-cannot-be-iodinated-with-i_2-directly-however-in-presence-of-oxidants-such-as-hno3-iodination-is-possible-the-electrophiles-formed-in-the-case-is-a-left-i-right-b","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/benzene-cannot-be-iodinated-with-i_2-directly-however-in-presence-of-oxidants-such-as-hno3-iodination-is-possible-the-electrophiles-formed-in-the-case-is-a-left-i-right-b\/","title":{"rendered":"Benzene cannot be iodinated with $${I_2}$$ directly. However, in presence of oxidants such as HNO3, iodination is possible. The electrophiles formed in the case is A. $$\\left[ {{I^ + }} \\right]$$ B. $$\\left[ {{I^ &#8211; }} \\right]$$ C. $${\\left[ {\\mathop I\\limits^{ + \\delta } &#8230;\\mathop O\\limits^{ + \\delta } {H_2}} \\right]^ + }$$ D. $${\\left[ {\\mathop I\\limits^{ + \\delta } &#8230;\\mathop O\\limits^{ &#8211; \\delta } {H_2}} \\right]^ + }$$"},"content":{"rendered":"<p>[amp_mcq option1=&#8221;$$\\left[ {{I^ + }} \\right]$$&#8221; option2=&#8221;$$\\left[ {{I^ &#8211; }} \\right]$$&#8221; option3=&#8221;$${\\left[ {\\mathop I\\limits^{ + \\delta } &#8230;\\mathop O\\limits^{ + \\delta } {H_2}} \\right]^ + }$$&#8221; option4=&#8221;$${\\left[ {\\mathop I\\limits^{ + \\delta } &#8230;\\mathop O\\limits^{ &#8211; \\delta } {H_2}} \\right]^ + }$$&#8221; correct=&#8221;option1&#8243;]<!--more--><\/p>\n<p>The correct answer is $\\boxed{\\left[ {\\mathop I\\limits^{ + \\delta } &#8230;\\mathop O\\limits^{ + \\delta } {H_2}} \\right]^ + }$.<\/p>\n<p>Benzene cannot be iodinated with $${I_2}$$ directly because the aromatic ring is very stable and does not react with electrophiles. However, in presence of oxidants such as HNO3, iodination is possible. The oxidant abstracts a hydrogen atom from benzene, creating a radical cation. The radical cation is then attacked by the electrophilic iodine molecule, forming the iodonium ion. The iodonium ion is a good leaving group, and it is displaced by a nucleophile, such as water, to form the iodobenzene product.<\/p>\n<p>The electrophile in this reaction is the iodonium ion, $\\left[ {\\mathop I\\limits^{ + \\delta } &#8230;\\mathop O\\limits^{ + \\delta } {H_2}} \\right]^ + $. The iodonium ion is formed when the oxidant abstracts a hydrogen atom from benzene, creating a radical cation. The radical cation is then attacked by the electrophilic iodine molecule, forming the iodonium ion. The iodonium ion is a good leaving group, and it is displaced by a nucleophile, such as water, to form the iodobenzene product.<\/p>\n<p>The other options are not correct because they are not electrophiles. Option A, $\\left[ {{I^ + }} \\right]$, is a cation, but it is not an electrophile. Option B, $\\left[ {{I^ &#8211; }} \\right]$, is an anion, and it is not an electrophile. Option C, ${\\left[ {\\mathop I\\limits^{ + \\delta } &#8230;\\mathop O\\limits^{ &#8211; \\delta } {H_2}} \\right]^ + }$, is a zwitterion, and it is not an electrophile.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[amp_mcq option1=&#8221;$$\\left[ {{I^ + }} \\right]$$&#8221; option2=&#8221;$$\\left[ {{I^ &#8211; }} \\right]$$&#8221; option3=&#8221;$${\\left[ {\\mathop I\\limits^{ + \\delta } &#8230;\\mathop O\\limits^{ + \\delta } {H_2}} \\right]^ + }$$&#8221; option4=&#8221;$${\\left[ {\\mathop I\\limits^{ + \\delta } &#8230;\\mathop O\\limits^{ &#8211; \\delta } {H_2}} \\right]^ + }$$&#8221; correct=&#8221;option1&#8243;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-19926","post","type-post","status-publish","format-standard","hentry","category-basics-of-organic-reaction-mechanism","no-featured-image-padding"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Benzene cannot be iodinated with $${I_2}$$ directly. However, in presence of oxidants such as HNO3, iodination is possible. The electrophiles formed in the case is A. $$\\left[ {{I^ + }} \\right]$$ B. $$\\left[ {{I^ - }} \\right]$$ C. $${\\left[ {\\mathop I\\limits^{ + \\delta } ...\\mathop O\\limits^{ + \\delta } {H_2}} \\right]^ + }$$ D. $${\\left[ {\\mathop I\\limits^{ + \\delta } ...\\mathop O\\limits^{ - \\delta } {H_2}} \\right]^ + }$$<\/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:\/\/exam.pscnotes.com\/mcq\/benzene-cannot-be-iodinated-with-i_2-directly-however-in-presence-of-oxidants-such-as-hno3-iodination-is-possible-the-electrophiles-formed-in-the-case-is-a-left-i-right-b\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Benzene cannot be iodinated with $${I_2}$$ directly. However, in presence of oxidants such as HNO3, iodination is possible. The electrophiles formed in the case is A. $$\\left[ {{I^ + }} \\right]$$ B. $$\\left[ {{I^ - }} \\right]$$ C. $${\\left[ {\\mathop I\\limits^{ + \\delta } ...\\mathop O\\limits^{ + \\delta } {H_2}} \\right]^ + }$$ D. $${\\left[ {\\mathop I\\limits^{ + \\delta } ...\\mathop O\\limits^{ - \\delta } {H_2}} \\right]^ + }$$\" \/>\n<meta property=\"og:description\" content=\"[amp_mcq option1=&#8221;$$left[ {{I^ + }} right]$$&#8221; option2=&#8221;$$left[ {{I^ &#8211; }} right]$$&#8221; option3=&#8221;$${left[ {mathop Ilimits^{ + delta } &#8230;mathop Olimits^{ + delta } {H_2}} right]^ + }$$&#8221; option4=&#8221;$${left[ {mathop Ilimits^{ + delta } &#8230;mathop Olimits^{ &#8211; delta } {H_2}} right]^ + }$$&#8221; correct=&#8221;option1&#8243;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/benzene-cannot-be-iodinated-with-i_2-directly-however-in-presence-of-oxidants-such-as-hno3-iodination-is-possible-the-electrophiles-formed-in-the-case-is-a-left-i-right-b\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2024-04-15T05:46:05+00:00\" \/>\n<meta name=\"author\" content=\"rawan239\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"rawan239\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Benzene cannot be iodinated with $${I_2}$$ directly. However, in presence of oxidants such as HNO3, iodination is possible. The electrophiles formed in the case is A. $$\\left[ {{I^ + }} \\right]$$ B. $$\\left[ {{I^ - }} \\right]$$ C. $${\\left[ {\\mathop I\\limits^{ + \\delta } ...\\mathop O\\limits^{ + \\delta } {H_2}} \\right]^ + }$$ D. $${\\left[ {\\mathop I\\limits^{ + \\delta } ...\\mathop O\\limits^{ - \\delta } {H_2}} \\right]^ + }$$","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/exam.pscnotes.com\/mcq\/benzene-cannot-be-iodinated-with-i_2-directly-however-in-presence-of-oxidants-such-as-hno3-iodination-is-possible-the-electrophiles-formed-in-the-case-is-a-left-i-right-b\/","og_locale":"en_US","og_type":"article","og_title":"Benzene cannot be iodinated with $${I_2}$$ directly. However, in presence of oxidants such as HNO3, iodination is possible. The electrophiles formed in the case is A. $$\\left[ {{I^ + }} \\right]$$ B. $$\\left[ {{I^ - }} \\right]$$ C. $${\\left[ {\\mathop I\\limits^{ + \\delta } ...\\mathop O\\limits^{ + \\delta } {H_2}} \\right]^ + }$$ D. $${\\left[ {\\mathop I\\limits^{ + \\delta } ...\\mathop O\\limits^{ - \\delta } {H_2}} \\right]^ + }$$","og_description":"[amp_mcq option1=&#8221;$$left[ {{I^ + }} right]$$&#8221; option2=&#8221;$$left[ {{I^ &#8211; }} right]$$&#8221; option3=&#8221;$${left[ {mathop Ilimits^{ + delta } &#8230;mathop Olimits^{ + delta } {H_2}} right]^ + }$$&#8221; option4=&#8221;$${left[ {mathop Ilimits^{ + delta } &#8230;mathop Olimits^{ &#8211; delta } {H_2}} right]^ + }$$&#8221; correct=&#8221;option1&#8243;]","og_url":"https:\/\/exam.pscnotes.com\/mcq\/benzene-cannot-be-iodinated-with-i_2-directly-however-in-presence-of-oxidants-such-as-hno3-iodination-is-possible-the-electrophiles-formed-in-the-case-is-a-left-i-right-b\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2024-04-15T05:46:05+00:00","author":"rawan239","twitter_card":"summary_large_image","twitter_misc":{"Written by":"rawan239","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/exam.pscnotes.com\/mcq\/benzene-cannot-be-iodinated-with-i_2-directly-however-in-presence-of-oxidants-such-as-hno3-iodination-is-possible-the-electrophiles-formed-in-the-case-is-a-left-i-right-b\/","url":"https:\/\/exam.pscnotes.com\/mcq\/benzene-cannot-be-iodinated-with-i_2-directly-however-in-presence-of-oxidants-such-as-hno3-iodination-is-possible-the-electrophiles-formed-in-the-case-is-a-left-i-right-b\/","name":"Benzene cannot be iodinated with $${I_2}$$ directly. 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The electrophiles formed in the case is A. $$\\left[ {{I^ + }} \\right]$$ B. $$\\left[ {{I^ - }} \\right]$$ C. $${\\left[ {\\mathop I\\limits^{ + \\delta } ...\\mathop O\\limits^{ + \\delta } {H_2}} \\right]^ + }$$ D. $${\\left[ {\\mathop I\\limits^{ + \\delta } ...\\mathop O\\limits^{ - \\delta } {H_2}} \\right]^ + }$$","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2024-04-15T05:46:05+00:00","dateModified":"2024-04-15T05:46:05+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/benzene-cannot-be-iodinated-with-i_2-directly-however-in-presence-of-oxidants-such-as-hno3-iodination-is-possible-the-electrophiles-formed-in-the-case-is-a-left-i-right-b\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/benzene-cannot-be-iodinated-with-i_2-directly-however-in-presence-of-oxidants-such-as-hno3-iodination-is-possible-the-electrophiles-formed-in-the-case-is-a-left-i-right-b\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/benzene-cannot-be-iodinated-with-i_2-directly-however-in-presence-of-oxidants-such-as-hno3-iodination-is-possible-the-electrophiles-formed-in-the-case-is-a-left-i-right-b\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"mcq","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/mcq\/"},{"@type":"ListItem","position":3,"name":"Engineering chemistry","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/mcq\/engineering-chemistry\/"},{"@type":"ListItem","position":4,"name":"Basics of organic reaction mechanism","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/mcq\/engineering-chemistry\/basics-of-organic-reaction-mechanism\/"},{"@type":"ListItem","position":5,"name":"Benzene cannot be iodinated with $${I_2}$$ directly. However, in presence of oxidants such as HNO3, iodination is possible. The electrophiles formed in the case is A. $$\\left[ {{I^ + }} \\right]$$ B. $$\\left[ {{I^ &#8211; }} \\right]$$ C. $${\\left[ {\\mathop I\\limits^{ + \\delta } &#8230;\\mathop O\\limits^{ + \\delta } {H_2}} \\right]^ + }$$ D. $${\\left[ {\\mathop I\\limits^{ + \\delta } &#8230;\\mathop O\\limits^{ &#8211; \\delta } {H_2}} \\right]^ + }$$"}]},{"@type":"WebSite","@id":"https:\/\/exam.pscnotes.com\/mcq\/#website","url":"https:\/\/exam.pscnotes.com\/mcq\/","name":"MCQ and Quiz for Exams","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/exam.pscnotes.com\/mcq\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209","name":"rawan239","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/761a7274f9cce048fa5b921221e7934820d74514df93ef195a9d22af0c1c9001?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/761a7274f9cce048fa5b921221e7934820d74514df93ef195a9d22af0c1c9001?s=96&d=mm&r=g","caption":"rawan239"},"sameAs":["https:\/\/exam.pscnotes.com"],"url":"https:\/\/exam.pscnotes.com\/mcq\/author\/rawan239\/"}]}},"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/19926","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/comments?post=19926"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/19926\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=19926"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=19926"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=19926"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}