{"id":133518,"date":"2022-03-03T23:40:30","date_gmt":"2022-03-03T18:10:30","guid":{"rendered":"https:\/\/infinitylearn.com\/surge\/?p=133518"},"modified":"2024-01-18T14:24:13","modified_gmt":"2024-01-18T08:54:13","slug":"trends-in-modern-periodic-table-valency","status":"publish","type":"post","link":"https:\/\/infinitylearn.com\/surge\/class-10\/chemisry\/periodic-classifications\/trends-in-modern-periodic-table-valency\/","title":{"rendered":"Periodic Trends \u2013 Valency"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_37 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\">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\" style=\"display: none;\"><label for=\"item\" aria-label=\"Table of Content\"><span style=\"display: flex;align-items: center;width: 35px;height: 30px;justify-content: center;\"><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><\/label><input type=\"checkbox\" id=\"item\"><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' style='display:block'><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/infinitylearn.com\/surge\/class-10\/chemisry\/periodic-classifications\/trends-in-modern-periodic-table-valency\/#What_are_the_Trends_in_the_modern_periodic_table\" title=\"What are the Trends in the modern periodic table?\">What are the Trends in the modern periodic table?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/infinitylearn.com\/surge\/class-10\/chemisry\/periodic-classifications\/trends-in-modern-periodic-table-valency\/#What_is_Valency\" title=\"What is Valency?\">What is Valency?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/infinitylearn.com\/surge\/class-10\/chemisry\/periodic-classifications\/trends-in-modern-periodic-table-valency\/#Valency\" title=\"Valency.\">Valency.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/infinitylearn.com\/surge\/class-10\/chemisry\/periodic-classifications\/trends-in-modern-periodic-table-valency\/#1_electron_%E2%86%92_Donate_1_electron_7_electrons_%E2%86%92_Accept_1_electron\" title=\"1 electron \u2192 Donate 1 electron 7 electrons \u2192 Accept 1 electron\">1 electron \u2192 Donate 1 electron 7 electrons \u2192 Accept 1 electron<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/infinitylearn.com\/surge\/class-10\/chemisry\/periodic-classifications\/trends-in-modern-periodic-table-valency\/#Halogens\" title=\"Halogens\">Halogens<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/infinitylearn.com\/surge\/class-10\/chemisry\/periodic-classifications\/trends-in-modern-periodic-table-valency\/#Modern_Periodic_Table_-_Valency_FAQs\" title=\"Modern Periodic Table \u2013 Valency FAQs\">Modern Periodic Table \u2013 Valency FAQs<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/infinitylearn.com\/surge\/class-10\/chemisry\/periodic-classifications\/trends-in-modern-periodic-table-valency\/#Why_does_valency_increase_in_a_period\" title=\"Why does valency increase in a period?\">Why does valency increase in a period?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/infinitylearn.com\/surge\/class-10\/chemisry\/periodic-classifications\/trends-in-modern-periodic-table-valency\/#What_is_valency_explain_the_trends_in_valency_in_a_period_and_in_a_group\" title=\"What is valency explain the trends in valency in a period and in a group?\">What is valency explain the trends in valency in a period and in a group?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/infinitylearn.com\/surge\/class-10\/chemisry\/periodic-classifications\/trends-in-modern-periodic-table-valency\/#What_is_the_trend_in_atomic_size_in_the_modern_periodic_table\" title=\"What is the trend in atomic size in the modern periodic table?\">What is the trend in atomic size in the modern periodic table?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/infinitylearn.com\/surge\/class-10\/chemisry\/periodic-classifications\/trends-in-modern-periodic-table-valency\/#What_is_the_periodic_trend_of_valency_and_atomic_size\" title=\"What is the periodic trend of valency and atomic size?\">What is the periodic trend of valency and atomic size?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<div class=\"group w-full text-token-text-primary border-b border-black\/10 gizmo:border-0 dark:border-gray-900\/50 gizmo:dark:border-0 bg-gray-50 gizmo:bg-transparent dark:bg-[#444654] gizmo:dark:bg-transparent\" data-testid=\"conversation-turn-5\">\n<div class=\"p-4 gizmo:py-2 justify-center text-base md:gap-6 md:py-6 m-auto\">\n<div class=\"flex flex-1 gap-4 text-base mx-auto md:gap-6 gizmo:gap-3 gizmo:md:px-5 gizmo:lg:px-1 gizmo:xl:px-5 md:max-w-2xl lg:max-w-[38rem] gizmo:md:max-w-3xl gizmo:lg:max-w-[40rem] gizmo:xl:max-w-[48rem] xl:max-w-3xl }\">\n<div class=\"relative flex w-[calc(100%-50px)] flex-col gizmo:w-full lg:w-[calc(100%-115px)] agent-turn\">\n<div class=\"flex-col gap-1 md:gap-3\">\n<div class=\"flex flex-grow flex-col gap-3 max-w-full\">\n<div class=\"min-h-[20px] flex flex-col items-start gap-3 whitespace-pre-wrap break-words overflow-x-auto\" data-message-author-role=\"assistant\" data-message-id=\"6ca144eb-b79b-444b-8e5c-7931c3299a6c\">\n<div class=\"markdown prose w-full break-words dark:prose-invert light\">\n<p>The number of connections an element can make changes as we move from the left to the right within a row on the periodic table. It goes up and then down, but when you look at elements in the same column, it stays the same.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>In the previous segment of the chapter \u2018Periodic Classification of Elements\u2019, we studied <strong>placing the elements in the periodic table<\/strong>. In this segment, let us get introduced to valency.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_are_the_Trends_in_the_modern_periodic_table\"><\/span>What are the Trends in the modern periodic table?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Trends refer to the properties in the periodic table. The trends important for studying the elements are:<\/p>\n<ul>\n<li>Valency<\/li>\n<li>Atomic size<\/li>\n<li>Metallic and Non-metallic characters<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"What_is_Valency\"><\/span>What is Valency?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>The capacity of the atom to give or take electrons during bond formation is called<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Valency\"><\/span>Valency.<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>The atom, having one electron in its outermost shell, wants to donate or lose that electron. The atom, having 7 electrons in the outermost orbit, tends to accept or gain an electron from outside. The valency of both will be one because the first atom can donate one electron and the second one can accept 1 electron.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"1_electron_%E2%86%92_Donate_1_electron_7_electrons_%E2%86%92_Accept_1_electron\"><\/span>1 electron \u2192 Donate 1 electron 7 electrons \u2192 Accept 1 electron<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>In any particular group, elements have the same valency.<\/li>\n<li>As we move down the group, the valency of elements remains the same because the number of valence electrons is the same throughout the group.<\/li>\n<\/ul>\n<p>For example, halogens belonging to the 17th column have the same valency. From fluorine to iodine, there are the same number of valence electrons in their outermost orbital,<\/p>\n<p>seven. All these elements show the valency one because they accept one electron from the other elements.<\/p>\n<p><img loading=\"lazy\" class=\"aligncenter wp-image-133516 size-full\" src=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2022\/03\/img-1646330338049.jpg\" alt=\"\" width=\"444\" height=\"339\" srcset=\"https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2022\/03\/img-1646330338049.jpg?v=1646330339 444w, https:\/\/infinitylearn.com\/surge\/wp-content\/uploads\/2022\/03\/img-1646330338049-300x229.jpg?v=1646330339 300w\" sizes=\"(max-width: 444px) 100vw, 444px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Halogens\"><\/span>Halogens<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>There is a difference in the valency of elements belonging to the same period.<\/li>\n<li>Metallic character of elements decreases from left to right in the period.<\/li>\n<li>The energy required to remove electrons from the atom is called <strong>Ionisation energy.<\/strong><\/li>\n<li>Metals tend to give away electrons because they have low ionisation energy.<\/li>\n<li>Metals have freely available electrons that can be easily lost to attain a stable electronic configuration. This tendency is shown by elements like sodium or magnesium which are placed towards the left in the table.<\/li>\n<li>Elements towards the left have lesser valence electrons so they give away electrons easily.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Modern_Periodic_Table_-_Valency_FAQs\"><\/span>Modern Periodic Table \u2013 Valency FAQs<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\t\t<section class=\"sc_fs_faq sc_card \">\n\t\t\t<div>\n\t\t\t\t<h3><span class=\"ez-toc-section\" id=\"Why_does_valency_increase_in_a_period\"><\/span>Why does valency increase in a period?<span class=\"ez-toc-section-end\"><\/span><\/h3>\t\t\t\t<div>\n\t\t\t\t\t\t\t\t\t\t<p>\n\t\t\t\t\t\tValency increases in a period because as you move across the periodic table, the number of electrons in the outermost shell stays the same, but the number of protons in the nucleus increases, making it easier for atoms to lose or gain electrons.\t\t\t\t\t<\/p>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"sc_fs_faq sc_card \">\n\t\t\t<div>\n\t\t\t\t<h3><span class=\"ez-toc-section\" id=\"What_is_valency_explain_the_trends_in_valency_in_a_period_and_in_a_group\"><\/span>What is valency explain the trends in valency in a period and in a group?<span class=\"ez-toc-section-end\"><\/span><\/h3>\t\t\t\t<div>\n\t\t\t\t\t\t\t\t\t\t<p>\n\t\t\t\t\t\tValency is how atoms combine with other atoms. In a period (horizontal row), valency tends to increase from left to right, while in a group (vertical column), valency often stays the same. Atomic size generally decreases from left to right across a period.\t\t\t\t\t<\/p>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"sc_fs_faq sc_card \">\n\t\t\t<div>\n\t\t\t\t<h3><span class=\"ez-toc-section\" id=\"What_is_the_trend_in_atomic_size_in_the_modern_periodic_table\"><\/span>What is the trend in atomic size in the modern periodic table?<span class=\"ez-toc-section-end\"><\/span><\/h3>\t\t\t\t<div>\n\t\t\t\t\t\t\t\t\t\t<p>\n\t\t\t\t\t\tIn the modern periodic table, atomic size tends to decrease from left to right across a period, as the number of protons in the nucleus increases, pulling the electrons closer.\t\t\t\t\t<\/p>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"sc_fs_faq sc_card \">\n\t\t\t<div>\n\t\t\t\t<h3><span class=\"ez-toc-section\" id=\"What_is_the_periodic_trend_of_valency_and_atomic_size\"><\/span>What is the periodic trend of valency and atomic size?<span class=\"ez-toc-section-end\"><\/span><\/h3>\t\t\t\t<div>\n\t\t\t\t\t\t\t\t\t\t<p>\n\t\t\t\t\t\tThe periodic trend for valency often increases from left to right in a period, while atomic size tends to decrease. In a group, valency may remain the same, and atomic size generally increases as you go down the group.\t\t\t\t\t<\/p>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/section>\n\t\t\n<script type=\"application\/ld+json\">\n\t{\n\t\t\"@context\": \"https:\/\/schema.org\",\n\t\t\"@type\": \"FAQPage\",\n\t\t\"mainEntity\": [\n\t\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"Why does valency increase in a period?\",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"Valency increases in a period because as you move across the periodic table, the number of electrons in the outermost shell stays the same, but the number of protons in the nucleus increases, making it easier for atoms to lose or gain electrons.\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t,\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"What is valency explain the trends in valency in a period and in a group?\",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"Valency is how atoms combine with other atoms. In a period (horizontal row), valency tends to increase from left to right, while in a group (vertical column), valency often stays the same. Atomic size generally decreases from left to right across a period.\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t,\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"What is the trend in atomic size in the modern periodic table?\",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"In the modern periodic table, atomic size tends to decrease from left to right across a period, as the number of protons in the nucleus increases, pulling the electrons closer.\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t,\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"What is the periodic trend of valency and atomic size?\",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"The periodic trend for valency often increases from left to right in a period, while atomic size tends to decrease. In a group, valency may remain the same, and atomic size generally increases as you go down the group.\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t\t\t\t]\n\t}\n<\/script>\n\n","protected":false},"excerpt":{"rendered":"<p>The number of connections an element can make changes as we move from the left to the right within a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"Modern Periodic Table \u2013 Valency","_yoast_wpseo_title":"Trends in Modern Periodic Table \u2013 Valency","_yoast_wpseo_metadesc":"Trends in Modern Periodic Table \u2013 Valency | Class 10 Chemisry Periodic Classifications","custom_permalink":"class-10\/chemisry\/periodic-classifications\/trends-in-modern-periodic-table-valency\/"},"categories":[1],"tags":[],"table_tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v17.9 - 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