[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-seo-566766-105":3,"detail-sidebar-cat-1-en-105":85,"doc-detail-566766-en":131},{"code":4,"msg":5,"data":6},0,"ok",{"site_id":7,"language":8,"slug":9,"title":10,"keywords":11,"description":12,"schema_data":13,"social_meta":78,"head_meta":80,"extra_data":82,"updated_unix":84},105,"en","the-periodic-table-groups-periods-atomic-number-explained-learn","The Periodic Table - Groups, Periods & Atomic Number Explained - Learn","","The text explains the periodic table as an organized grid of 118 chemical elements arranged by atomic number and related electron properties. It details atomic number meaning, protons, neutrons and electrons, and clarifies isotopes within the same element. It describes how electron shells and configurations determine rows and columns, then covers periodic trends, grouping into 18 groups, periods as vertical rows, and the s-, p-, d-, and f-blocks, concluding with categories of metals, nonmetals, and metalloids.",{"@graph":14,"@context":77},[15,34,56],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/template/","Template",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/template/general/","General",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/template/the-periodic-table-groups-periods-atomic-number-explained-learn/566766/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/the-periodic-table-groups-periods-atomic-number-explained-learn/566766.png","ImageObject",442,249,{"name":42,"@type":43},"lugxt","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-10-28","2026-10-13",true,{"@type":52,"interactionType":53,"userInteractionCount":55},"InteractionCounter",{"@type":54},"ViewAction",9,{"@type":57,"mainEntity":58},"FAQPage",[59,65,69,73],{"name":60,"@type":61,"acceptedAnswer":62},"What does the atomic number (Z) tell you about an element?","Question",{"text":63,"@type":64},"It indicates the number of protons in the element’s nucleus. Different neutron counts produce isotopes of the same element.","Answer",{"name":66,"@type":61,"acceptedAnswer":67},"How are groups and periods defined on the periodic table?",{"text":68,"@type":64},"Groups are the 18 vertical columns based on valence (outer-shell) electrons. Periods are the vertical rows, and moving across or down shows predictable property trends.",{"name":70,"@type":61,"acceptedAnswer":71},"What are the s-block, p-block, d-block, and f-block?",{"text":72,"@type":64},"Blocks divide the table by the outermost subshell that receives an electron: s-block, p-block, d-block, and f-block (which hosts lanthanides and actinides).",{"name":74,"@type":61,"acceptedAnswer":75},"How do metals, nonmetals, and metalloids differ?",{"text":76,"@type":64},"Metals are highly conducting and form ionic compounds, nonmetals form covalent bonding, and metalloids have intermediate properties that fit neither category fully.","https://schema.org",{"og:url":32,"og:type":79,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":81,"canonical":32},"index,follow",{"doc_id":83,"site_id":7},566766,1792027681,{"code":4,"msg":86,"data":87},"success",[88,93,98,103,108,113,118,123,128],{"id":89,"doc_module":22,"doc_module_name":25,"category_name":90,"show_sort_weight":91,"slug":92},11,"Presentations",90,"presentations",{"id":94,"doc_module":22,"doc_module_name":25,"category_name":95,"show_sort_weight":96,"slug":97},12,"Resumes",80,"resumes",{"id":99,"doc_module":22,"doc_module_name":25,"category_name":100,"show_sort_weight":101,"slug":102},14,"Invoices",70,"invoices",{"id":104,"doc_module":22,"doc_module_name":25,"category_name":105,"show_sort_weight":106,"slug":107},15,"Posters",60,"posters",{"id":109,"doc_module":22,"doc_module_name":25,"category_name":110,"show_sort_weight":111,"slug":112},16,"Social Media",50,"social-media",{"id":114,"doc_module":22,"doc_module_name":25,"category_name":115,"show_sort_weight":116,"slug":117},17,"Forms",40,"forms",{"id":119,"doc_module":22,"doc_module_name":25,"category_name":120,"show_sort_weight":121,"slug":122},18,"Letters",30,"letters",{"id":124,"doc_module":22,"doc_module_name":25,"category_name":125,"show_sort_weight":126,"slug":127},21,"Paper Templates",5,"papers-templates",{"id":129,"doc_module":22,"doc_module_name":25,"category_name":29,"show_sort_weight":4,"slug":130},158,"general-158",{"code":4,"msg":86,"data":132},{"doc_id":83,"user_id":133,"nickname":42,"user_avatar":134,"doc_module":22,"category_id":129,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":135,"file_id":136,"file_url":137,"file_type":138,"file_size":139,"view_count":55,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":99,"language":140,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":12,"update_tm":144,"read_time":126},3985747862600,"https://ap-avatar.wpscdn.com/davatar_9964176cb1d06d4a9deccf72a44ae3dc","The Periodic Table-Groups, Periods & Atomic Number Explained!  \nThe Periodic Table is probably one of the most iconic scientific documents, a single table that holds within itself almost all chemical knowledge amassed by man. The periodic table is a tabular arrangement of 118 elements, organized by atomic number, number of free electrons, and grouped together by similarity in chemical properties. Read this article on Periodic Table, to know all about chemical elements, atomic no., grouping method, and useful tips to learn the periodic table to ace the Railways, SSC, UPSC exams.  \nPeriodic Table Atomic Number  \nThe Periodic Table has 118 elements which organized on the basis of atomic number and grouped based on similarity in chemical properties. The first element is Hydrogen (H) with atomic number 1 and the last element is Oganesson (Og) with atomic number 118.  \n• All chemical elements have unique atomic numbers or Z.  \n• Atomic numbers signify the number of protons in its nucleus. Atoms of the same element having a different number of neutrons in the nucleus are called isotopes.  \n• Isotopes differ in mass number (n) but have the same atomic number. Isotopes are never separated in the periodic table; they are always grouped together under a single element.  \nThis image covers details about the Neutrons, Protons and Electrons.  \nThe elements are indexed in order of increasing atomic number in the periodic table. When a new electron shell receives its first electron, we enter a new row in the table. Electron configurations ofthe atoms determine their columns: elements with the same number of electrons in a particular subshell fall into the same columns, eg. Sodium and Potassium. Elements in the same group tend to have similar chemical properties andreactivities. Hence, if we know one element of a group, it is relatively easy to ascertain the properties of the rest.  \nPeriodic Table History  \nThe periodic table wasn’t always like today’s. The periodic table has been through several iterations of attempted systemization before we reached the one we use now.  \nThe first attempt was by Antoine Lavoisier in 1789 when he published a list of 33 chemical elements. He grouped them into gases, metals, nonmetals and earth. In 1829, Johann Wolfgang improved this table by observing the similarities in the chemical properties of triads of elements and grouping them, thus giving rise to the Law of Triads. Several chemists made revisions to the table, but no scheme could satisfy the  \ncorrect groupings.  \nAlexandre-Emile Béguyer de Chancourtois published a periodic table in the form of a helix in 1862. The elements were arranged in a spiral on a cylinder and were the first arrangement to hint at periodicity in the properties. De Chancourtois indexed the elements by increasing atomic weight and showed that similar chemical properties were reflected after regular intervals. However, his work did not receive too much attention.  \nThe first edition of the modern periodic table was published by Mendeleev in 1871. Mendeleev’s periodic table had eight columns, each column containing elements with similar properties. The columns were numbered I to VIII and also had empty cells for elements that hadn't been discovered yet, but Mendeleev predicted they should exist. As chemists discovered more and more elements, these gaps were filled.  \nThe common or standard form of the modern periodic table is attributed to Horace Groves Deming. He published the short and medium forms of the table in 1923 that soon came into circulation and universal acceptance.  \nPeriodic Table Grouping Method  \nGroups  \nThe 18 vertical columns of the table are called Groups. The number of electrons in the outermost shell of the atom, i.e. valence shell, is equal for all elements in the same group.  \nThe leftmost group contains alkali metals and the rightmost contains noble gases. Elements in the same column exhibit similar chemical properties and display periodicity with an increa","cbCairSTdsFYmyMc","https://ap.wps.com/l/cbCairSTdsFYmyMc","pdf",837324,"English","# Periodic Table Overview\n## Atomic Number and Isotopes\n## Arrangement by Electron Configuration\n# Periodic Table History\n## Early Classification Attempts\n## Mendeleev and the Modern Table\n# Grouping Method\n## Groups (1 to 18)\n## Periods and Trends Across a Period\n## Blocks (s, p, d, f)\n# Element Types\n## Metals\n## Nonmetals\n## Metalloids","[{\"question\":\"What does the atomic number (Z) tell you about an element?\",\"answer\":\"It indicates the number of protons in the element’s nucleus. Different neutron counts produce isotopes of the same element.\"},{\"question\":\"How are groups and periods defined on the periodic table?\",\"answer\":\"Groups are the 18 vertical columns based on valence (outer-shell) electrons. Periods are the vertical rows, and moving across or down shows predictable property trends.\"},{\"question\":\"What are the s-block, p-block, d-block, and f-block?\",\"answer\":\"Blocks divide the table by the outermost subshell that receives an electron: s-block, p-block, d-block, and f-block (which hosts lanthanides and actinides).\"},{\"question\":\"How do metals, nonmetals, and metalloids differ?\",\"answer\":\"Metals are highly conducting and form ionic compounds, nonmetals form covalent bonding, and metalloids have intermediate properties that fit neither category fully.\"}]","The Periodic Table - Groups, Periods & Atomic Number Explained - Learn | PDF",1791863647]