[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-detail-207988-en":3,"doc-seo-207988-105":30,"detail-sidebar-cat-0-en-105":91},{"code":4,"msg":5,"data":6},0,"success",{"doc_id":7,"user_id":8,"nickname":9,"user_avatar":10,"doc_module":4,"category_id":11,"category_name":12,"doc_title":13,"doc_description":14,"doc_content":15,"file_id":16,"file_url":17,"file_type":18,"file_size":19,"view_count":20,"is_deleted":4,"is_public":20,"is_downloadable":20,"audit_status":20,"page_count":21,"language":22,"language_code":23,"site_id":24,"html_lang":23,"table_of_contents":25,"faqs":26,"seo_title":27,"seo_description":14,"update_tm":28,"read_time":29},207988,687207022233,"Connor ","https://ap-avatar.wpscdn.com/davatar_155a257f0dc6eb9ab79c44ca47cae57d",4,"Exam","THE PERIODIC TABLE - GCSE CHEMISTRY - GCSE Chemistry Periodic Table Notes","GCSE Chemistry periodic table notes explain how the periodic table organizes known elements and why it predicts reactions and compound formation. The material covers Mendeleev’s approach, including arranging elements by atomic mass, leaving gaps for undiscovered elements, and correctly predicting properties later confirmed by discovery. It also outlines Mendeleev’s periodic law and evaluates strengths and limitations. Finally, it introduces the modern periodic table’s assembly using atomic number after Moseley’s X-ray findings.","[For more Topics Visit](For more Topics Visit myexamrevision.com)[ ](For more Topics Visit myexamrevision.com)[myexamrevision.com](For more Topics Visit myexamrevision.com)  \nTHE PERIODIC TABLE – GCSE CHEMISTRY  \nCONTENTS:  \n1. Introduction.  \n2. How Mendeleev expressed his theory in the periodic table?  \n3. How Modern Periodic Table get assembled?  \n4. Identification of elements as Metals and Non-Metals.  \n5. Electronic Configuration of periodic elements (1-20) .  \n6. FAQs  \n1. Introduction  \nThe periodic table is a chart that organizes all known elements in a clear and meaningful way. It helps us understand how elements behave, how they interact, and what properties they share.  \n It helps us understand element properties and how different elements are related to each other.  \n The periodic table is a powerful tool used by scientists to predict how elements will react, form compounds, or be used in real-life applications.  \n It continues to grow and evolve as new elements are discovered and added.  \n[For more Topics Visit](For more Topics Visit myexamrevision.com)[ ](For more Topics Visit myexamrevision.com)[myexamrevision.com](For more Topics Visit myexamrevision.com)  \nTHE PERIODIC TABLE – GCSE CHEMISTRY  \n2. How Mendeleev expressed his Theory?  \nDmitri Ivanovich Mendeleev was a Russian chemist and professor, born on February 8, 1834.  \n In 1869, he developed the first version of the periodic table by arranging elements in order of their atomic mass. Mendeleev’s table was unique because he left gaps for unknown elements and predicted their properties in advance.  \n His predictions were later proven correct when those missing elements (like gallium and germanium) were discovered.  \n Mendeleev is often called the “Father of the Periodic Table” because his work laid the foundation for how we study elements today.  \nBorn on 8th February, 1834  \nDeveloped the first version of periodic table His ideas were unique from any other scientists . He is often called as “Father of the Periodic Table”  \nPeriodic law given by Sir Mendeleev:  \n\"The properties of elements are a periodic function of their atomic masses .\"  \nBold Strategy:  \nUnlike others before him, Mendeleev was bold in his approach. If an element did not fit the pattern, he would rearrange it or leave a gap, predicting that an undiscovered element would later fill that position. Remarkably, he not only predicted the existence of several new elements but also described their chemical and physical properties with impressive accuracy.  \n[For more Topics Visit](For more Topics Visit myexamrevision.com)[ ](For more Topics Visit myexamrevision.com)[myexamrevision.com](For more Topics Visit myexamrevision.com)  \nTHE PERIODIC TABLE – GCSE CHEMISTRY  \nHow he arranged the elements?  \n Mendeleev arranged elements in order of increasing atomic mass.  \n He placed elements with similar properties in the same vertical columns (groups) .  \n When elements didn’t fit the pattern, he left gaps and predicted undiscovered elements.  \n He sometimes rearranged elements to keep similar ones together, even if the mass order was broken.  \n His focus was more on chemical properties than just atomic mass.  \n This led to a table showing periodic (repeating) patterns in element behavior.  \nPostulates of Mendeleev’s Periodic Table  \n Elements are arranged in order of increasing atomic mass .  \n Mendeleev believed that atomic mass was the most important property for organizing elements.  \n Elements with similar properties appear at regular intervals.  \n This repeating pattern is known as periodicity.  \n[For more Topics Visit](For more Topics Visit myexamrevision.com)[ ](For more Topics Visit myexamrevision.com)[myexamrevision.com](For more Topics Visit myexamrevision.com)  \nTHE PERIODIC TABLE – GCSE CHEMISTRY  \n Elements with similar chemical properties are placed in the same vertical column (group) .  \n For example, all alkali metals like lithium, sodium, and potassium are in one group.  \n The propertie","cbCaifaEoSQFjZ1j","https://ap.wps.com/l/cbCaifaEoSQFjZ1j","pdf",4349847,1,10,"English","en",105,"# Introduction\n# How Mendeleev expressed his Theory?\n## How he arranged the elements?\n## Postulates of Mendeleev’s Periodic Table\n## Pros and Cons of Mendeleev’s Periodic Table\n# How Modern Periodic Table get assembled?","[{\"question\":\"What is the periodic table and what is it used for in science?\",\"answer\":\"The periodic table organizes all known elements in a clear way so their behaviors and shared properties can be understood. It helps predict how elements react, form compounds, and are used in real-life applications.\"},{\"question\":\"How did Mendeleev arrange the periodic table?\",\"answer\":\"Mendeleev arranged elements in order of increasing atomic mass and placed elements with similar properties in the same vertical columns (groups). When elements did not fit the pattern, he left gaps to predict undiscovered elements.\"},{\"question\":\"Why was the modern periodic table assembled differently from Mendeleev’s table?\",\"answer\":\"The modern periodic table was rearranged using atomic number instead of atomic mass. Moseley’s X-ray experiments showed each element has a unique number of protons, which fixed inconsistencies found in the earlier arrangement.\"}]","THE PERIODIC TABLE - GCSE CHEMISTRY - GCSE Chemistry Periodic Table Notes | PDF",1788602011,25,{"code":4,"msg":31,"data":32},"ok",{"site_id":24,"language":23,"slug":33,"title":13,"keywords":34,"description":14,"schema_data":35,"social_meta":86,"head_meta":88,"extra_data":90,"updated_unix":28},"the-periodic-table-gcse-chemistry-gcse-chemistry-periodic-table-notes","",{"@graph":36,"@context":85},[37,53,68],{"@type":38,"itemListElement":39},"BreadcrumbList",[40,44,48,51],{"item":41,"name":42,"@type":43,"position":20},"https://docshare.wps.com","Home","ListItem",{"item":45,"name":46,"@type":43,"position":47},"https://docshare.wps.com/document/","Document",2,{"item":49,"name":12,"@type":43,"position":50},"https://docshare.wps.com/document/exam/",3,{"item":52,"name":13,"@type":43,"position":11},"https://docshare.wps.com/document/the-periodic-table-gcse-chemistry-gcse-chemistry-periodic-table-notes/207988/",{"url":52,"name":13,"@type":54,"author":55,"headline":13,"publisher":57,"fileFormat":60,"inLanguage":23,"description":14,"dateModified":61,"datePublished":62,"encodingFormat":60,"isAccessibleForFree":63,"interactionStatistic":64},"DigitalDocument",{"name":9,"@type":56},"Person",{"url":41,"name":58,"@type":59},"DocShare","Organization","application/pdf","2026-09-07","2026-09-05",true,{"@type":65,"interactionType":66,"userInteractionCount":20},"InteractionCounter",{"@type":67},"ViewAction",{"@type":69,"mainEntity":70},"FAQPage",[71,77,81],{"name":72,"@type":73,"acceptedAnswer":74},"What is the periodic table and what is it used for in science?","Question",{"text":75,"@type":76},"The periodic table organizes all known elements in a clear way so their behaviors and shared properties can be understood. It helps predict how elements react, form compounds, and are used in real-life applications.","Answer",{"name":78,"@type":73,"acceptedAnswer":79},"How did Mendeleev arrange the periodic table?",{"text":80,"@type":76},"Mendeleev arranged elements in order of increasing atomic mass and placed elements with similar properties in the same vertical columns (groups). When elements did not fit the pattern, he left gaps to predict undiscovered elements.",{"name":82,"@type":73,"acceptedAnswer":83},"Why was the modern periodic table assembled differently from Mendeleev’s table?",{"text":84,"@type":76},"The modern periodic table was rearranged using atomic number instead of atomic mass. Moseley’s X-ray experiments showed each element has a unique number of protons, which fixed inconsistencies found in the earlier arrangement.","https://schema.org",{"og:url":52,"og:type":87,"og:title":13,"og:site_name":58,"og:description":14},"article",{"robots":89,"canonical":52},"index,follow",{"doc_id":7,"site_id":24},{"code":4,"msg":5,"data":92},[93,97,101,104,109,114,119,124,129,132,135],{"id":20,"doc_module":4,"doc_module_name":46,"category_name":94,"show_sort_weight":95,"slug":96},"Story & Novel",90,"story-novel",{"id":47,"doc_module":4,"doc_module_name":46,"category_name":98,"show_sort_weight":99,"slug":100},"Literature",80,"literature",{"id":11,"doc_module":4,"doc_module_name":46,"category_name":12,"show_sort_weight":102,"slug":103},70,"exam",{"id":105,"doc_module":4,"doc_module_name":46,"category_name":106,"show_sort_weight":107,"slug":108},5,"Comic",60,"comic",{"id":110,"doc_module":4,"doc_module_name":46,"category_name":111,"show_sort_weight":112,"slug":113},6,"Technology",50,"technology",{"id":115,"doc_module":4,"doc_module_name":46,"category_name":116,"show_sort_weight":117,"slug":118},7,"Healthcare",40,"healthcare",{"id":120,"doc_module":4,"doc_module_name":46,"category_name":121,"show_sort_weight":122,"slug":123},8,"Research & Report",30,"research-report",{"id":125,"doc_module":4,"doc_module_name":46,"category_name":126,"show_sort_weight":127,"slug":128},9,"Religion & Spirituality",20,"religion-spirituality",{"id":127,"doc_module":4,"doc_module_name":46,"category_name":130,"show_sort_weight":127,"slug":131},"World Cup","world-cup",{"id":21,"doc_module":4,"doc_module_name":46,"category_name":133,"show_sort_weight":21,"slug":134},"Lifestyle","lifestyle",{"id":136,"doc_module":4,"doc_module_name":46,"category_name":137,"show_sort_weight":105,"slug":138},19,"General","general"]