{"id":3186,"date":"2023-01-09T10:07:50","date_gmt":"2023-01-09T10:07:50","guid":{"rendered":"https:\/\/10thclass.deltapublications.in\/?page_id=3186"},"modified":"2024-12-25T16:50:46","modified_gmt":"2024-12-25T16:50:46","slug":"s-5-b-making-order-out-of-chaos-mendeleevs-periodic-table","status":"publish","type":"page","link":"https:\/\/10thclass.deltapublications.in\/index.php\/s-5-b-making-order-out-of-chaos-mendeleevs-periodic-table\/","title":{"rendered":"s-5.b Making Order Out Of Chaos-Mendeleev&#8217;s Periodic Table"},"content":{"rendered":"\n<h2 class=\"wp-block-heading has-text-align-center has-text-color\" style=\"color:#00056d;text-transform:uppercase\"><strong>Making Order Out Of Chaos-Mendeleev&#8217;s Periodic Table<\/strong><\/h2>\n\n\n\n<p class=\"has-text-color has-link-color has-huge-font-size wp-elements-f79afd6ea8b322268468366b8e5f7cc7\" style=\"color:#74008b\"><strong>Key Notes:<\/strong><\/p>\n\n\n\n<p class=\"has-text-align-center has-text-color has-background has-link-color has-large-font-size wp-elements-e152c6b32e554f48608bd92246f6e6f7\" style=\"color:#000060;background-color:#dfc816\"><strong>Historical Background<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Chemistry in the mid-19th century was disorganized, with about 63 known elements.<\/li>\n\n\n\n<li>Scientists sought a system to classify elements based on their properties.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center has-text-color has-background has-link-color has-large-font-size wp-elements-e1fb4f7debedb9a61f7cf552f4b04c07\" style=\"color:#000060;background-color:#dfc816\"><strong>Dmitri Mendeleev<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>A Russian chemist who introduced the first periodic table in 1869.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/DELTA-PUBLICATIONS-3-1.png\" alt=\"\" class=\"wp-image-15582\" style=\"width:270px;height:auto\" srcset=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/DELTA-PUBLICATIONS-3-1.png 500w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/DELTA-PUBLICATIONS-3-1-300x300.png 300w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/DELTA-PUBLICATIONS-3-1-150x150.png 150w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/DELTA-PUBLICATIONS-3-1-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure><\/div>\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>His periodic table arranged elements in increasing order of atomic masses.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center has-text-color has-background has-link-color has-large-font-size wp-elements-dcaeab93920c5141b5e3e9e6dd9481d5\" style=\"color:#000060;background-color:#dfc816\"><strong>Mendeleev\u2019s Approach<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Grouped elements with similar chemical properties into vertical columns (groups).<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"640\" src=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/Untitled-design-80-1-1024x640.png\" alt=\"\" class=\"wp-image-15584\" style=\"width:390px;height:auto\" srcset=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/Untitled-design-80-1-1024x640.png 1024w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/Untitled-design-80-1-300x188.png 300w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/Untitled-design-80-1-768x480.png 768w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/Untitled-design-80-1-1536x960.png 1536w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/Untitled-design-80-1-1568x980.png 1568w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/Untitled-design-80-1.png 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Left gaps for undiscovered elements and predicted their properties accurately.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center has-text-color has-background has-link-color has-large-font-size wp-elements-c9bb573dd06ef48cb45c23d94620ef42\" style=\"color:#000060;background-color:#dfc816\"><strong>Periodic Law<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Mendeleev formulated the <strong>Periodic Law<\/strong>: <em>&#8220;The properties of elements are a periodic function of their atomic masses.&#8221;<\/em><\/li>\n\n\n\n<li>Elements showed recurring (&#8220;periodic&#8221;) properties at regular intervals.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center has-text-color has-background has-link-color has-large-font-size wp-elements-39fa1c0253c2d27a1abca5ec8037a652\" style=\"color:#000060;background-color:#dfc816\"><strong>Key Features of Mendeleev\u2019s Table<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li><strong>Vertical Groups<\/strong>: Contained elements with similar properties.<\/li>\n\n\n\n<li><strong>Horizontal Periods<\/strong>: Represented a progression in properties.<\/li>\n\n\n\n<li><strong>Gaps for Undiscovered Elements<\/strong>: For example, he left spaces for scandium, gallium, and germanium.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center has-text-color has-background has-link-color has-large-font-size wp-elements-258c83c785d7e6e677391c126ae40b66\" style=\"color:#000060;background-color:#dfc816\"><strong>Predictions and Discoveries<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Mendeleev predicted properties of elements like eka-aluminum (gallium) and eka-silicon (germanium).<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/DELTA-PUBLICATIONS-4.png\" alt=\"\" class=\"wp-image-15586\" srcset=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/DELTA-PUBLICATIONS-4.png 500w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/DELTA-PUBLICATIONS-4-300x300.png 300w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/DELTA-PUBLICATIONS-4-150x150.png 150w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/DELTA-PUBLICATIONS-4-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure><\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/DELTA-PUBLICATIONS-5.png\" alt=\"\" class=\"wp-image-15587\" srcset=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/DELTA-PUBLICATIONS-5.png 500w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/DELTA-PUBLICATIONS-5-300x300.png 300w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/DELTA-PUBLICATIONS-5-150x150.png 150w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/DELTA-PUBLICATIONS-5-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Later discoveries matched his predictions, proving the reliability of his table.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center has-text-color has-background has-link-color has-large-font-size wp-elements-84a00ebf93ff698571dac9bc45e2623b\" style=\"color:#000060;background-color:#dfc816\"><strong>Challenges in Mendeleev\u2019s Table<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Certain elements did not fit perfectly when arranged by atomic mass (e.g., iodine and tellurium).<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/DELTA-PUBLICATIONS-6.png\" alt=\"\" class=\"wp-image-15588\" srcset=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/DELTA-PUBLICATIONS-6.png 500w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/DELTA-PUBLICATIONS-6-300x300.png 300w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/DELTA-PUBLICATIONS-6-150x150.png 150w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/DELTA-PUBLICATIONS-6-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/DELTA-PUBLICATIONS-7.png\" alt=\"\" class=\"wp-image-15589\" srcset=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/DELTA-PUBLICATIONS-7.png 500w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/DELTA-PUBLICATIONS-7-300x300.png 300w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/DELTA-PUBLICATIONS-7-150x150.png 150w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/DELTA-PUBLICATIONS-7-400x400.png 400w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Isotopes and atomic numbers were not known at the time.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center has-text-color has-background has-link-color has-large-font-size wp-elements-b969d37381de6d17d32759e06a8b8e2c\" style=\"color:#000060;background-color:#dfc816\"><strong>Significance of Mendeleev\u2019s Work<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Brought order and systematic study to chemistry.<\/li>\n\n\n\n<li>Laid the foundation for the modern periodic table.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center has-text-color has-background has-link-color has-large-font-size wp-elements-7774a2ba9d76d2725d8c993bb0d418f6\" style=\"color:#000060;background-color:#dfc816\"><strong>Limitations<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Could not explain the reasons for periodicity.<\/li>\n\n\n\n<li>Some anomalies were later resolved by the discovery of atomic number and isotopes.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center has-text-color has-background has-link-color has-large-font-size wp-elements-d653c088666aa1fd1b0fc7acd0228717\" style=\"color:#000060;background-color:#dfc816\"><strong>Modern Periodic Table<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Based on atomic number (introduced by Henry Moseley in 1913).<\/li>\n\n\n\n<li>Improved upon Mendeleev\u2019s model but retained the fundamental periodic law.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"640\" src=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/Untitled-design-81-1-1024x640.png\" alt=\"\" class=\"wp-image-15591\" style=\"width:398px;height:auto\" srcset=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/Untitled-design-81-1-1024x640.png 1024w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/Untitled-design-81-1-300x188.png 300w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/Untitled-design-81-1-768x480.png 768w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/Untitled-design-81-1-1536x960.png 1536w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/Untitled-design-81-1-1568x980.png 1568w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2024\/12\/Untitled-design-81-1.png 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n<p class=\"has-text-align-center has-text-color has-background has-link-color has-large-font-size wp-elements-57f897fb1ca8c148ac3e71f2566521b7\" style=\"color:#000060;background-color:#dfc816\"><strong>Impact<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list has-large-font-size\">\n<li>Mendeleev\u2019s table remains a cornerstone in the study of chemistry.<\/li>\n\n\n\n<li>It demonstrated the power of scientific prediction and organization.<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-group has-large-font-size\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"has-text-color\" style=\"color:#d90000\"><strong>Let&#8217;s practice!<\/strong><\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/76050\/401\/517\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-22.png\" alt=\"\" class=\"wp-image-5493\" srcset=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-22.png 500w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-22-300x300.png 300w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-3-22-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/81511\/615\/771\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-22.png\" alt=\"\" class=\"wp-image-5494\" srcset=\"https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-22.png 500w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-22-300x300.png 300w, https:\/\/10thclass.deltapublications.in\/wp-content\/uploads\/2023\/03\/Worksheet-1-1-2-22-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Making Order Out Of Chaos-Mendeleev&#8217;s Periodic Table Key Notes: Historical Background: Dmitri Mendeleev: Mendeleev\u2019s Approach: Periodic Law: Key Features of Mendeleev\u2019s Table: Predictions and Discoveries: Challenges in Mendeleev\u2019s Table: Significance of Mendeleev\u2019s Work: Limitations: Modern Periodic Table: Impact: Let&#8217;s practice!<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-3186","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/10thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3186","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/10thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/10thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/10thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/10thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/comments?post=3186"}],"version-history":[{"count":19,"href":"https:\/\/10thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3186\/revisions"}],"predecessor-version":[{"id":15592,"href":"https:\/\/10thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/3186\/revisions\/15592"}],"wp:attachment":[{"href":"https:\/\/10thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/media?parent=3186"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}