{"id":19904,"date":"2024-04-15T05:45:47","date_gmt":"2024-04-15T05:45:47","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=19904"},"modified":"2024-04-15T05:45:47","modified_gmt":"2024-04-15T05:45:47","slug":"the-configurations-at-the-three-chiral-centres-in-the-bicyclodecanol-given-below-are-a-1s-2s-6r-b-1s-2s-6s-c-1r-2r-6r-d-1r-2s-6r","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/the-configurations-at-the-three-chiral-centres-in-the-bicyclodecanol-given-below-are-a-1s-2s-6r-b-1s-2s-6s-c-1r-2r-6r-d-1r-2s-6r\/","title":{"rendered":"The configurations at the three chiral centres in the bicyclodecanol given below, are A. 1S, 2S, 6R B. 1S, 2S, 6S C. 1R, 2R, 6R D. 1R, 2S, 6R"},"content":{"rendered":"<p>\r\n    <!-- Check if it's an AMP page -->\r\n            <!-- Non-AMP version -->\r\n        <div class=\"mcq-container\" data-quiz-id=\"quizState_6a98f82a427e0\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"true\">\r\n                    1S, 2S, 6R                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"false\">\r\n                    1S, 2S, 6S                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"false\">\r\n                    1R, 2R, 6R                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"false\">\r\n                    1R, 2S, 6R                <\/div>\r\n                            \r\n            <!-- Feedback messages for non-AMP -->\r\n            <div class=\"feedback\" data-feedback=\"wrong\">Answer is Right!<\/div>\r\n            <div class=\"feedback\" data-feedback=\"right\">Answer is Wrong!<\/div>\r\n        <\/div>\r\n\r\n        <script>\r\n        document.addEventListener('DOMContentLoaded', function () {\r\n            var containers = document.querySelectorAll('.mcq-container');\r\n\r\n            containers.forEach(function(container) {\r\n                var options = container.querySelectorAll('.option');\r\n                var feedbackSelect = container.querySelector('[data-feedback=\"select\"]');\r\n                var feedbackWrong = container.querySelector('[data-feedback=\"wrong\"]');\r\n                var feedbackRight = container.querySelector('[data-feedback=\"right\"]');\r\n\r\n                options.forEach(function(option) {\r\n                    option.addEventListener('click', function() {\r\n                        var selectedOption = option.getAttribute('data-option-key');\r\n                        var isCorrect = option.getAttribute('data-is-correct') === 'true';\r\n\r\n                        \/\/ Remove previous selections\r\n                        options.forEach(function(opt) {\r\n                            opt.classList.remove('correct', 'incorrect');\r\n                        });\r\n\r\n                        \/\/ Add the correct\/incorrect class\r\n                        if (isCorrect) {\r\n                            option.classList.add('correct');\r\n                            feedbackRight.hidden = false;\r\n                            feedbackWrong.hidden = true;\r\n                        } else {\r\n                            option.classList.add('incorrect');\r\n                            feedbackRight.hidden = true;\r\n                            feedbackWrong.hidden = false;\r\n                        }\r\n\r\n                        \/\/ Hide select feedback\r\n                        feedbackSelect.hidden = true;\r\n                    });\r\n                });\r\n            });\r\n        });\r\n        <\/script>\r\n    \r\n    <!--more--><\/p>\n<p>The correct answer is A. 1S, 2S, 6R.<\/p>\n<p>To assign the configuration at each chiral center, we need to determine which group is coming out of the page and which group is going into the page. We can do this by drawing a Fischer projection of the molecule.<\/p>\n<p>In a Fischer projection, the horizontal bonds are coming out of the page and the vertical bonds are going into the page. The substituents are then placed on the appropriate bonds according to their priority. The priority of the substituents is determined by the following rules:<\/p>\n<ol>\n<li>Atoms with higher atomic numbers have higher priority.<\/li>\n<li>If two atoms have the same atomic number, the atom with the greater number of bonds to hydrogen has higher priority.<\/li>\n<li>If two atoms have the same atomic number and the same number of bonds to hydrogen, the atom with the lower atomic number has higher priority.<\/li>\n<\/ol>\n<p>Once the priority of the substituents has been determined, we can assign the configuration of the chiral center by following the Cahn-Ingold-Prelog (CIP) system. The CIP system assigns the configuration of a chiral center as R or S, depending on which group is coming out of the page (R) or going into the page (S).<\/p>\n<p>In the case of bicyclodecanol, the configuration at the first chiral center is S. This is because the group with the highest priority (the hydroxyl group) is coming <div class=\"telegram-channel-container\">\r\n        <a href=\"https:\/\/t.me\/pscnotes2025\" target=\"_blank\" class=\"telegram-channel-button\">\r\n            <span class=\"telegram-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 496 512\">\r\n                    <path fill=\"white\" d=\"M248,8C111,8,0,119,0,256s111,248,248,248s248-111,248-248S385,8,248,8z M362,177L320,367c-3,14-10,18-20,14l-56-41l-27,26 c-3,3-5,5-10,5l4-63L323,196c5-5-1-7-8-3l-98,62l-42-13c-9-3-10-9,2-14l162-63C351,160,365,164,362,177z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Join Our Telegram Channel\r\n        <\/a>\r\n    <\/div> out of the page. The configuration at the second chiral center is also S. This is because the group with the highest priority (the methyl group) is coming out of the page. The configuration at the third chiral center is R. This is because the group with <div class=\"youtube-subscribe-container\">\r\n        <a href=\"https:\/\/www.youtube.com\/channel\/UCNHT8lW-JmLC68rjBfZhdkg?sub_confirmation=1\" target=\"_blank\" class=\"youtube-subscribe-button\">\r\n            <span class=\"youtube-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 576 512\">\r\n                    <path d=\"M549.7 124.1c-6.3-23.7-24.8-42.3-48.3-48.6C458.8 64 288 64 288 64S117.2 64 74.6 75.5c-23.5 6.3-42 24.9-48.3 48.6-11.4 42.9-11.4 132.3-11.4 132.3s0 89.4 11.4 132.3c6.3 23.7 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Subscribe on YouTube\r\n        <\/a>\r\n    <\/div> the highest priority (the hydroxyl group) is going into the page.<\/p>\n<p>Therefore, the configurations at the three chiral centers in bicyclodecanol are 1S, 2S, 6R.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Subscribe on YouTube<\/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":[],"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>The configurations at the three chiral centres in the bicyclodecanol given below, are A. 1S, 2S, 6R B. 1S, 2S, 6S C. 1R, 2R, 6R D. 1R, 2S, 6R<\/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\/the-configurations-at-the-three-chiral-centres-in-the-bicyclodecanol-given-below-are-a-1s-2s-6r-b-1s-2s-6s-c-1r-2r-6r-d-1r-2s-6r\/\" \/>\n<meta property=\"og:locale\" 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