{"id":6675,"date":"2026-02-19T09:54:38","date_gmt":"2026-02-19T09:54:38","guid":{"rendered":"https:\/\/www.chennaineet.com\/blog\/?p=6675"},"modified":"2026-02-21T10:31:56","modified_gmt":"2026-02-21T10:31:56","slug":"chapter-3-the-s-block-elements-ncert","status":"publish","type":"post","link":"https:\/\/www.chennaineet.com\/blog\/chapter-3-the-s-block-elements-ncert\/","title":{"rendered":"NCERT Book for Class 11 Chemistry Part 2 \u2013 (Chapter 3 &#8211; The S Block Elements)"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\"><strong>Chapter 3 &#8211; The S Block Elements<\/strong><\/h2>\n\n\n\n<p>Chapter 10 \u2013 The s-Block Elements covers elements of <strong>Group 1 (Alkali metals)<\/strong> and <strong>Group 2 (Alkaline earth metals)<\/strong> of the periodic table. These elements have their valence electron in the s-orbital, which gives them characteristic properties like high reactivity, low ionization energy, and strong electropositive nature.<\/p>\n\n\n\n<p>The chapter explains their <strong>electronic configuration, physical and chemical properties, trends in atomic size and ionization energy<\/strong>, and important compounds such as sodium carbonate, sodium hydroxide, calcium oxide, and plaster of Paris. It also discusses anomalous properties of lithium and diagonal relationship. This chapter is very important for CBSE board exams as well as <a href=\"https:\/\/www.kaashivinfotech.com\/blog\/which-online-platforms-provide-live-neet-coaching-classes-2026\/\" target=\"_blank\" rel=\"noopener\">NEET<\/a> and JEE preparation.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>The S Block Elements NCERT<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"786\" height=\"1024\" src=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-1-786x1024.jpg\" alt=\"\" class=\"wp-image-6676\" srcset=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-1-786x1024.jpg 786w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-1-230x300.jpg 230w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-1-768x1000.jpg 768w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-1-1179x1536.jpg 1179w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-1-440x573.jpg 440w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-1-680x886.jpg 680w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-1.jpg 1312w\" sizes=\"(max-width: 786px) 100vw, 786px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"786\" height=\"1024\" src=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-2-786x1024.jpg\" alt=\"\" class=\"wp-image-6677\" srcset=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-2-786x1024.jpg 786w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-2-230x300.jpg 230w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-2-768x1000.jpg 768w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-2-1179x1536.jpg 1179w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-2-440x573.jpg 440w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-2-680x886.jpg 680w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-2.jpg 1312w\" sizes=\"(max-width: 786px) 100vw, 786px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"786\" height=\"1024\" src=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-3-786x1024.jpg\" alt=\"\" class=\"wp-image-6678\" srcset=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-3-786x1024.jpg 786w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-3-230x300.jpg 230w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-3-768x1000.jpg 768w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-3-1179x1536.jpg 1179w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-3-440x573.jpg 440w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-3-680x886.jpg 680w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-3.jpg 1312w\" sizes=\"(max-width: 786px) 100vw, 786px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"786\" height=\"1024\" src=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-4-786x1024.jpg\" alt=\"\" class=\"wp-image-6679\" srcset=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-4-786x1024.jpg 786w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-4-230x300.jpg 230w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-4-768x1000.jpg 768w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-4-1179x1536.jpg 1179w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-4-440x573.jpg 440w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-4-680x886.jpg 680w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-4.jpg 1312w\" sizes=\"(max-width: 786px) 100vw, 786px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"786\" height=\"1024\" src=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-5-786x1024.jpg\" alt=\"\" class=\"wp-image-6680\" srcset=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-5-786x1024.jpg 786w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-5-230x300.jpg 230w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-5-768x1000.jpg 768w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-5-1179x1536.jpg 1179w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-5-440x573.jpg 440w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-5-680x886.jpg 680w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-5.jpg 1312w\" sizes=\"(max-width: 786px) 100vw, 786px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"786\" height=\"1024\" src=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-6-786x1024.jpg\" alt=\"\" class=\"wp-image-6681\" srcset=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-6-786x1024.jpg 786w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-6-230x300.jpg 230w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-6-768x1000.jpg 768w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-6-1179x1536.jpg 1179w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-6-440x573.jpg 440w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-6-680x886.jpg 680w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-6.jpg 1312w\" sizes=\"(max-width: 786px) 100vw, 786px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"786\" height=\"1024\" src=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-7-786x1024.jpg\" alt=\"\" class=\"wp-image-6682\" srcset=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-7-786x1024.jpg 786w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-7-230x300.jpg 230w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-7-768x1000.jpg 768w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-7-1179x1536.jpg 1179w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-7-440x573.jpg 440w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-7-680x886.jpg 680w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-7.jpg 1312w\" sizes=\"(max-width: 786px) 100vw, 786px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"786\" height=\"1024\" src=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-8-786x1024.jpg\" alt=\"\" class=\"wp-image-6683\" srcset=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-8-786x1024.jpg 786w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-8-230x300.jpg 230w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-8-768x1000.jpg 768w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-8-1179x1536.jpg 1179w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-8-440x573.jpg 440w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-8-680x886.jpg 680w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-8.jpg 1312w\" sizes=\"(max-width: 786px) 100vw, 786px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"786\" height=\"1024\" src=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-9-786x1024.jpg\" alt=\"\" class=\"wp-image-6684\" srcset=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-9-786x1024.jpg 786w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-9-230x300.jpg 230w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-9-768x1000.jpg 768w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-9-1179x1536.jpg 1179w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-9-440x573.jpg 440w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-9-680x886.jpg 680w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-9.jpg 1312w\" sizes=\"(max-width: 786px) 100vw, 786px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"786\" height=\"1024\" src=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-10-786x1024.jpg\" alt=\"\" class=\"wp-image-6685\" srcset=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-10-786x1024.jpg 786w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-10-230x300.jpg 230w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-10-768x1000.jpg 768w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-10-1179x1536.jpg 1179w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-10-440x573.jpg 440w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-10-680x886.jpg 680w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-10.jpg 1312w\" sizes=\"(max-width: 786px) 100vw, 786px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"786\" height=\"1024\" src=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-11-786x1024.jpg\" alt=\"\" class=\"wp-image-6686\" srcset=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-11-786x1024.jpg 786w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-11-230x300.jpg 230w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-11-768x1000.jpg 768w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-11-1179x1536.jpg 1179w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-11-440x573.jpg 440w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-11-680x886.jpg 680w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-11.jpg 1312w\" sizes=\"(max-width: 786px) 100vw, 786px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"786\" height=\"1024\" src=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-12-786x1024.jpg\" alt=\"\" class=\"wp-image-6687\" srcset=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-12-786x1024.jpg 786w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-12-230x300.jpg 230w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-12-768x1000.jpg 768w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-12-1179x1536.jpg 1179w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-12-440x573.jpg 440w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-12-680x886.jpg 680w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-12.jpg 1312w\" sizes=\"(max-width: 786px) 100vw, 786px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"786\" height=\"1024\" src=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-13-786x1024.jpg\" alt=\"\" class=\"wp-image-6688\" srcset=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-13-786x1024.jpg 786w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-13-230x300.jpg 230w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-13-768x1000.jpg 768w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-13-1179x1536.jpg 1179w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-13-440x573.jpg 440w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-13-680x886.jpg 680w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-13.jpg 1312w\" sizes=\"(max-width: 786px) 100vw, 786px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"786\" height=\"1024\" src=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-14-786x1024.jpg\" alt=\"\" class=\"wp-image-6689\" srcset=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-14-786x1024.jpg 786w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-14-230x300.jpg 230w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-14-768x1000.jpg 768w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-14-1179x1536.jpg 1179w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-14-440x573.jpg 440w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-14-680x886.jpg 680w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-14.jpg 1312w\" sizes=\"(max-width: 786px) 100vw, 786px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"786\" height=\"1024\" src=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-15-786x1024.jpg\" alt=\"\" class=\"wp-image-6690\" srcset=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-15-786x1024.jpg 786w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-15-230x300.jpg 230w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-15-768x1000.jpg 768w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-15-1179x1536.jpg 1179w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-15-440x573.jpg 440w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-15-680x886.jpg 680w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-15.jpg 1312w\" sizes=\"(max-width: 786px) 100vw, 786px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"786\" height=\"1024\" src=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-16-786x1024.jpg\" alt=\"\" class=\"wp-image-6691\" srcset=\"https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-16-786x1024.jpg 786w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-16-230x300.jpg 230w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-16-768x1000.jpg 768w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-16-1179x1536.jpg 1179w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-16-440x573.jpg 440w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-16-680x886.jpg 680w, https:\/\/www.chennaineet.com\/blog\/wp-content\/uploads\/2026\/02\/The-S-Block-Elements-16.jpg 1312w\" sizes=\"(max-width: 786px) 100vw, 786px\" \/><\/figure>\n\n\n\n<p><strong><a href=\"https:\/\/www.chennaineet.com\/blog\/chapter-4-the-p-block-elements-ncert\/\">Chapter 4 &#8211; The P Block Elements<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Chapter 3 &#8211; The S Block Elements Chapter 10 \u2013 The s-Block Elements covers elements of Group 1 (Alkali metals) and Group 2 (Alkaline earth metals) of the periodic table. These elements have their valence electron in the s-orbital, which gives them characteristic properties like high reactivity, low ionization energy, and strong electropositive nature. The [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":6829,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[134,136],"tags":[547,545,542,541,543,479,546,544],"class_list":["post-6675","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ncert-book","category-neet-chemistry","tag-class-11-chemistry-ncert-book-pdf-download-part-1","tag-environmental-chemistry-class-11-ncert-pdf","tag-environmental-chemistry-ncert-class-11","tag-hydrogen-ncert-pdf-download","tag-ncert-class-11-chemistry-unit-14-pdf","tag-old-ncert-chemistry-class-11-pdf-part-2","tag-p-block-elements-class-11-ncert-pdf","tag-s-block-elements-class-11-ncert-book-pdf"],"_links":{"self":[{"href":"https:\/\/www.chennaineet.com\/blog\/wp-json\/wp\/v2\/posts\/6675","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.chennaineet.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.chennaineet.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.chennaineet.com\/blog\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.chennaineet.com\/blog\/wp-json\/wp\/v2\/comments?post=6675"}],"version-history":[{"count":2,"href":"https:\/\/www.chennaineet.com\/blog\/wp-json\/wp\/v2\/posts\/6675\/revisions"}],"predecessor-version":[{"id":6719,"href":"https:\/\/www.chennaineet.com\/blog\/wp-json\/wp\/v2\/posts\/6675\/revisions\/6719"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.chennaineet.com\/blog\/wp-json\/wp\/v2\/media\/6829"}],"wp:attachment":[{"href":"https:\/\/www.chennaineet.com\/blog\/wp-json\/wp\/v2\/media?parent=6675"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.chennaineet.com\/blog\/wp-json\/wp\/v2\/categories?post=6675"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.chennaineet.com\/blog\/wp-json\/wp\/v2\/tags?post=6675"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}