{"id":4651,"date":"2018-09-06T03:37:00","date_gmt":"2018-09-05T22:07:00","guid":{"rendered":"http:\/\/mycbseguide.com\/blog\/ncert-solutions-class-11-chemistry-classification-of-elements-and-periodicity-in-properties-part-1\/"},"modified":"2018-10-22T17:21:00","modified_gmt":"2018-10-22T11:51:00","slug":"ncert-solutions-for-class-11-chemistry-classification-of-elements-and-periodicity-in-properties-part-1","status":"publish","type":"post","link":"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-11-chemistry-classification-of-elements-and-periodicity-in-properties-part-1\/","title":{"rendered":"NCERT Solutions for Class 11 Chemistry Classification of Elements and Periodicity in Properties Part 1"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_76 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-11-chemistry-classification-of-elements-and-periodicity-in-properties-part-1\/#NCERT_Class_11_Chemistry_Chapter_wise_Solutions\" >NCERT Class 11 Chemistry Chapter wise Solutions<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-11-chemistry-classification-of-elements-and-periodicity-in-properties-part-1\/#NCERT_Solutions_for_Class_11_Chemistry_Classification_of_Elements_and_Periodicity_in_Properties_Part_1\" >NCERT Solutions for Class 11 Chemistry Classification of Elements and Periodicity in Properties Part 1<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-11-chemistry-classification-of-elements-and-periodicity-in-properties-part-1\/#NCERT_Solutions_for_Class_11_Chemistry_Chapter_3_Classification_of_Elements_and_Periodicity_in_Properties_Part_1\" >NCERT Solutions for Class 11 Chemistry Chapter 3 Classification of Elements and Periodicity in Properties Part 1<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-11-chemistry-classification-of-elements-and-periodicity-in-properties-part-1\/#NCERT_Solutions_for_Science_Class_3rd_to_12th\" >NCERT Solutions for Science Class 3rd to 12th<\/a><\/li><\/ul><\/nav><\/div>\n<p>NCERT Solutions for Class 11 Chemistry Classification of Elements and Periodicity in Properties Part 1 Class 11 Chemistry book solutions are available in PDF format for free download. These ncert book chapter wise questions and answers are very helpful for CBSE board exam. CBSE recommends NCERT books and most of the questions in CBSE exam are asked from NCERT text books. Class 11 Chemistry chapter wise NCERT solution for Class 11 Chemistry Some Basic Concepts of Chemistry Part 1 and all the chapters can be downloaded from our website and myCBSEguide mobile app for free.<\/p>\n<p style=\"text-align: center;\"><strong>NCERT solutions for Class 11 Chemistry\u00a0<a class=\"button\" href=\"https:\/\/mycbseguide.com\/downloads\/cbse-class-11-chemistry\/1356\/ncert-solutions\/5\/\">Download as PDF<\/a><\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignright\" src=\"https:\/\/media-mycbseguide.s3.ap-south-1.amazonaws.com\/images\/blog\/11_Chemistry_Book.jpg\" alt=\"Class 11 Chemistry Classification of Elements and Periodicity in Properties Part 1\" width=\"85\" height=\"122\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"NCERT_Class_11_Chemistry_Chapter_wise_Solutions\"><\/span><span class=\"underline-text\">NCERT Class 11 Chemistry Chapter wise Solutions<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>Chapter 1 \u2013 Some Basic Concepts of Chemistry<\/li>\n<li>Chapter 2 \u2013 Structure of Atom<\/li>\n<li>Chapter 3 \u2013 Classification of Elements and Periodicity in Properties<\/li>\n<li>Chapter 4 \u2013 Chemical Bonding and Molecular Structure<\/li>\n<li>Chapter 5 \u2013 States of Matter<\/li>\n<li>Chapter 6 \u2013 Thermodynamics<\/li>\n<li>Chapter 7 \u2013 Equilibrium<\/li>\n<li>Chapter 8 \u2013 Redox Reactions<\/li>\n<li>Chapter 9 \u2013 Hydrogen<\/li>\n<li>Chapter 10 \u2013 The s-Block Elements<\/li>\n<li>Chapter 11 \u2013 The p-Block Elements<\/li>\n<li>Chapter 12 \u2013 Organic Chemistry \u2013 Some Basic Principles and Techniques<\/li>\n<li>Chapter 13 \u2013\u00a0Hydrocarbons<\/li>\n<li>Chapter 14 \u2013\u00a0Environmental Chemistry<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"NCERT_Solutions_for_Class_11_Chemistry_Classification_of_Elements_and_Periodicity_in_Properties_Part_1\"><\/span>NCERT Solutions for Class 11 Chemistry Classification of Elements and Periodicity in Properties Part 1<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><center><strong>Class 11 Chemistry Classification of Elements and Periodicity in Properties Part 1<\/strong><\/center>1. What is the basic theme of organisation in the periodic table?<\/p>\n<p>2. Which important property did Mendeleev use to classify the elements in his periodic table and did he stick to that?<\/p>\n<p>3. What is the basic difference in approach between the Mendeleev&#8217;s Periodic Law and the Modern Periodic Law?<\/p>\n<p>4. On the basis of quantum numbers, justify that the sixth period of the periodic table should have 32 elements.<\/p>\n<p>5. In terms of period and group where would you locate the element with <em>Z<\/em> =114?<\/p>\n<p>6. Write the atomic number of the element present in the third period and seventeenth group of the periodic table.<\/p>\n<p>7. Which element do you think would have been named by<\/p>\n<p>(i) Lawrence Berkeley Laboratory<\/p>\n<p>(ii) Seaborg&#8217;s group?<\/p>\n<p>8. Why do elements in the same group have similar physical and chemical properties?<\/p>\n<p>9. What does atomic radius and ionic radius really mean to you?<\/p>\n<p>10. How does atomic radius vary in a period and in a group? How do you explain the variation?<\/p>\n<p>11. What do you understand by isoelectronic species? Name a species that will be<\/p>\n<p>isoelectronic with each of the following atoms or ions.<\/p>\n<p>(i) <img decoding=\"async\" style=\"height: 20px; width: 21px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/11\/chemistry\/ch03\/image005.png\" \/><\/p>\n<p>(ii) Ar<\/p>\n<p>(iii) <img decoding=\"async\" style=\"height: 25px; width: 40px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/11\/chemistry\/ch03\/image006.png\" \/><\/p>\n<p>(iv) Rb<sup>+<\/sup><br \/>\n12. Consider the following species:<\/p>\n<p><img decoding=\"async\" style=\"height: 25px; width: 236px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/11\/chemistry\/ch03\/image015.png\" \/><\/p>\n<p>(a) What is common in them?<\/p>\n<p>(b) Arrange them in the order of increasing ionic radii.<\/p>\n<p>13. Explain why cations are smaller and anions larger in radii than their parent atoms?<\/p>\n<p>14. What is the significance of the terms &#8211; &#8216;isolated gaseous atom&#8217; and &#8216;ground state&#8217; while defining the ionization enthalpy and electron gain enthalpy?<\/p>\n<p>Hint: Requirements for comparison purposes.<\/p>\n<p>15. Energy of an electron in the ground state of the hydrogen atom is<img decoding=\"async\" style=\"height: 21px; width: 89px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/11\/chemistry\/ch03\/image018.png\" \/>J. Calculate the ionization enthalpy of atomic hydrogen in terms of J mol<sup>-1<\/sup>.<\/p>\n<p>16. Among the second period elements the actual ionization enthalpies are in the order Li &lt; B &lt; Be &lt; C &lt; O &lt; N &lt; F &lt; Ne.<\/p>\n<p>Explain why<\/p>\n<p>(i) Be has higher<img decoding=\"async\" style=\"height: 25px; width: 33px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/11\/chemistry\/ch03\/image023.png\" \/>than B<\/p>\n<p>(ii) O has lower <img decoding=\"async\" style=\"height: 25px; width: 33px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/11\/chemistry\/ch03\/image023.png\" \/> than N and F?<\/p>\n<p style=\"text-align: justify;\">17. How would you explain the fact that the first ionization enthalpy of sodium is lower than that of magnesium but its second ionization enthalpy is higher than that of magnesium?<\/p>\n<p>18. What are the various factors due to which the ionization enthalpy of the main group elements tends to decrease down a group?<\/p>\n<p>19. The first ionization enthalpy values (in<img decoding=\"async\" style=\"height: 21px; width: 58px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/11\/chemistry\/ch03\/image024.png\" \/> ) of group 13 elements are:<\/p>\n<p><img decoding=\"async\" id=\"Picture 2\" style=\"height: 61px; width: 340px;\" src=\"https:\/\/media-mycbseguide.s3.amazonaws.com\/images\/static\/ncert\/11\/chemistry\/ch03\/image025.png\" \/><\/p>\n<p>How would you explain this deviation from the general trend?<\/p>\n<p>20. Which of the following pairs of elements would have a more negative electron gain enthalpy?<\/p>\n<p>(i) O or F (ii) F or Cl<\/p>\n<h2><span class=\"ez-toc-section\" id=\"NCERT_Solutions_for_Class_11_Chemistry_Chapter_3_Classification_of_Elements_and_Periodicity_in_Properties_Part_1\"><\/span>NCERT Solutions for Class 11 Chemistry Chapter 3 Classification of Elements and Periodicity in Properties Part 1<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>NCERT Solutions Class 11 Chemistry Classification of Elements and Periodicity in Properties Part 1 PDF (Download) Free<\/strong>\u00a0from myCBSEguide app and myCBSEguide website. Ncert solution class 11 Chemistry includes text book solutions from both part 1 and part 2. NCERT Solutions for CBSE Class 11 Chemistry have total 14 chapters. 11 Chemistry NCERT Solutions in PDF for free Download on our website. Ncert Chemistry class 11 solutions PDF and Chemistry ncert class 11 PDF solutions with latest modifications and as per the latest CBSE syllabus are only available in myCBSEguide<\/p>\n<h2><span class=\"ez-toc-section\" id=\"NCERT_Solutions_for_Science_Class_3rd_to_12th\"><\/span>NCERT Solutions for Science Class 3rd to 12th<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li><a href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-12-physics\/\">NCERT Solutions for Class 12 Physics<\/a>.<\/li>\n<li><a href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-12-chemistry\/\">NCERT Solutions for Class 12 Chemistry<\/a><\/li>\n<li><a href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-12-biology\/\">NCERT Solutions for Class 12 Biology<\/a><\/li>\n<li><a href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-11-physics\/\">NCERT solutions for class 11 Physics<\/a><\/li>\n<li><a href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-11-chemistry\/\">NCERT Solutions for Class 11 Chemistry<\/a><\/li>\n<li><a href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-11-biology\/\">NCERT solutions for class 11 Biology<\/a><\/li>\n<li><a href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-10-science\/\">NCERT Solutions for Class 10 Science<\/a><\/li>\n<li><a href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-9-science\/\">NCERT Solutions for Class 9 Science<\/a><\/li>\n<li><a href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-8-science\/\">NCERT solutions for Class 8 Science<\/a><\/li>\n<li><a href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-7-science\/\">NCERT solutions for Class 7 Science<\/a><\/li>\n<li><a href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-6-science\/\">NCERT Solutions for Class 6 Science<\/a><\/li>\n<li><a href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-5-evs\/\">NCERT Solutions for Class 5 EVS<\/a><\/li>\n<li><a href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-4-evs\/\">NCERT Solutions for Class 4 EVS<\/a><\/li>\n<li><a href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-3-evs\/\">NCERT Solutions for Class 3 EVS<\/a><\/li>\n<\/ul>\n<p>To download\u00a0NCERT Solutions for class 11 Chemistry, Physics, Biology, History, Political Science, Economics, Geography, Computer Science, Home Science, Accountancy, Business Studies and Home Science; do check myCBSEguide app or website. myCBSEguide provides sample papers with solution, test papers for chapter-wise practice, NCERT solutions, NCERT Exemplar solutions, quick revision notes for ready reference, CBSE guess papers and CBSE important question papers. Sample Paper all are made available through\u00a0<a href=\"https:\/\/play.google.com\/store\/apps\/details?id=in.techchefs.MyCBSEGuide&amp;referrer=utm_source%3Dmycbse_bottom%26utm_medium%3Dtext%26utm_campaign%3Dmycbseads\"><strong>the best app for CBSE students<\/strong><\/a>\u00a0and\u00a0<strong>myCBSEguide.com<\/strong>\u00a0website.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>NCERT Solutions for Class 11 Chemistry Classification of Elements and Periodicity in Properties Part 1 Class 11 Chemistry book solutions are available in PDF format for free download. These ncert book chapter wise questions and answers are very helpful for CBSE board exam. CBSE recommends NCERT books and most of the questions in CBSE exam &#8230; <a title=\"NCERT Solutions for Class 11 Chemistry Classification of Elements and Periodicity in Properties Part 1\" class=\"read-more\" href=\"https:\/\/mycbseguide.com\/blog\/ncert-solutions-for-class-11-chemistry-classification-of-elements-and-periodicity-in-properties-part-1\/\" aria-label=\"More on NCERT Solutions for Class 11 Chemistry Classification of Elements and Periodicity in Properties Part 1\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":-1,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1416,281],"tags":[283,320,1449,216],"class_list":["post-4651","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-chemistry","category-ncert-solutions","tag-cbse-study-material","tag-chemistry","tag-class-11","tag-ncert-solutions"],"yoast_head":"<!-- This site is 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