[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-1-en-105":3,"doc-seo-572042-105":53,"doc-detail-572042-en":126},{"code":4,"msg":5,"data":6},0,"success",[7,14,19,24,29,34,39,44,49],{"id":8,"doc_module":9,"doc_module_name":10,"category_name":11,"show_sort_weight":12,"slug":13},11,1,"Template","Presentations",90,"presentations",{"id":15,"doc_module":9,"doc_module_name":10,"category_name":16,"show_sort_weight":17,"slug":18},12,"Resumes",80,"resumes",{"id":20,"doc_module":9,"doc_module_name":10,"category_name":21,"show_sort_weight":22,"slug":23},14,"Invoices",70,"invoices",{"id":25,"doc_module":9,"doc_module_name":10,"category_name":26,"show_sort_weight":27,"slug":28},15,"Posters",60,"posters",{"id":30,"doc_module":9,"doc_module_name":10,"category_name":31,"show_sort_weight":32,"slug":33},16,"Social Media",50,"social-media",{"id":35,"doc_module":9,"doc_module_name":10,"category_name":36,"show_sort_weight":37,"slug":38},17,"Forms",40,"forms",{"id":40,"doc_module":9,"doc_module_name":10,"category_name":41,"show_sort_weight":42,"slug":43},18,"Letters",30,"letters",{"id":45,"doc_module":9,"doc_module_name":10,"category_name":46,"show_sort_weight":47,"slug":48},21,"Paper Templates",5,"papers-templates",{"id":50,"doc_module":9,"doc_module_name":10,"category_name":51,"show_sort_weight":4,"slug":52},158,"General","general-158",{"code":4,"msg":54,"data":55},"ok",{"site_id":56,"language":57,"slug":58,"title":59,"keywords":60,"description":61,"schema_data":62,"social_meta":119,"head_meta":121,"extra_data":123,"updated_unix":125},105,"en","the-periodic-table-cheat-sheet-quick-reference","The periodic table Cheat Sheet - Quick Reference","","A concise quick reference for the modern periodic table, summarizing valence behavior by group: alkali lose one electron toward noble gas configurations, alkaline earth lose two, group 13 loses three, group 15 gains three (valence 3- for lighter elements), group 16 gains two, and halogens gain one. Includes key trends such as atomic/ionic radii and their variation across groups and periods, ionization energy dependence on nuclear attraction and effective nuclear charge, magnetic property categories (diamagnetic vs paramagnetic), and atomic-size concepts like penetration and screening with Zeff=Z-σ. Also covers Slater rules for shielding and electron affinity trends.",{"@graph":63,"@context":118},[64,80,101],{"@type":65,"itemListElement":66},"BreadcrumbList",[67,71,74,77],{"item":68,"name":69,"@type":70,"position":9},"https://docshare.wps.com","Home","ListItem",{"item":72,"name":10,"@type":70,"position":73},"https://docshare.wps.com/template/",2,{"item":75,"name":11,"@type":70,"position":76},"https://docshare.wps.com/template/presentations/",3,{"item":78,"name":59,"@type":70,"position":79},"https://docshare.wps.com/template/the-periodic-table-cheat-sheet-quick-reference/572042/",4,{"url":78,"name":59,"@type":81,"image":82,"author":87,"headline":59,"publisher":90,"fileFormat":93,"inLanguage":57,"description":61,"dateModified":94,"datePublished":95,"encodingFormat":93,"isAccessibleForFree":96,"interactionStatistic":97},"DigitalDocument",{"url":83,"@type":84,"width":85,"height":86},"https://docshare.wps.com/thumbnails/the-periodic-table-cheat-sheet-quick-reference/572042.png","ImageObject",442,249,{"name":88,"@type":89},"Aditya","Person",{"url":68,"name":91,"@type":92},"DocShare","Organization","application/pdf","2026-10-23","2026-10-13",true,{"@type":98,"interactionType":99,"userInteractionCount":76},"InteractionCounter",{"@type":100},"ViewAction",{"@type":102,"mainEntity":103},"FAQPage",[104,110,114],{"name":105,"@type":106,"acceptedAnswer":107},"How do valence electrons change across the main groups shown in the cheat sheet?","Question",{"text":108,"@type":109},"It lists group-by-group behavior: alkali metals lose 1 e−, alkaline earth lose 2 e−, group 13 lose 3 e− (as stated), group 15 gains 3 e−, group 16 gains 2 e−, and group 17 gains 1 e−, each leading toward noble gas configurations.","Answer",{"name":111,"@type":106,"acceptedAnswer":112},"What trends does the document state for atomic radii and ionic radii across a group and across a period?",{"text":113,"@type":109},"It states that within a group atomic radius increases with atomic number Z, while within a period it decreases with Z.",{"name":115,"@type":106,"acceptedAnswer":116},"What do penetration and screening mean in this summary, and how is Zeff expressed?",{"text":117,"@type":109},"Penetration is defined as how close an electron gets to the nucleus, with s e− > p e− > d e−. Screening is how an outer electron is blocked by inner electrons, expressed as Zeff=Z-σ.","https://schema.org",{"og:url":78,"og:type":120,"og:title":59,"og:site_name":91,"og:description":61},"article",{"robots":122,"canonical":78},"index,follow",{"doc_id":124,"site_id":56},572042,1792458365,{"code":4,"msg":5,"data":127},{"doc_id":124,"user_id":128,"nickname":88,"user_avatar":129,"doc_module":9,"category_id":8,"category_name":11,"doc_title":59,"doc_description":61,"doc_content":130,"file_id":131,"file_url":132,"file_type":133,"file_size":134,"view_count":76,"is_deleted":4,"is_public":9,"is_downloadable":9,"audit_status":9,"page_count":9,"language":135,"language_code":57,"site_id":56,"html_lang":57,"table_of_contents":136,"faqs":137,"seo_title":138,"seo_description":61,"update_tm":139,"read_time":4},962085564549,"https://ap-avatar.wpscdn.com/davatar_085a072bc5b1113ac321206ff7593b45","The periodic table Cheat Sheet  \n[by](by resaraj via cheatography.com/209482/cs/45151/)[ resaraj](by resaraj via cheatography.com/209482/cs/45151/)[ via](by resaraj via cheatography.com/209482/cs/45151/)[ cheatography.com/209482/cs/45151/](by resaraj via cheatography.com/209482/cs/45151/)  \nThe modern periodic table  \nAlkaline (ns¹) lose 1 e ⁻  \nvalence 1+⟶Noble gas configuration  \nAlkaline earth (ns) lose 2 e ⁻  \nvalence 2+⟶Noble gas configuration  \nGroup 13(ns np) light elements lose 3 e ⁻  \nheavy elements lose 3 e ⁻  \nGroup 15/ Nitrogen group (ns np)  \ngain 3 e ⁻  \nvalence 3- (more important for light elements)  \nGroup 16/ Oxygen group (ns np)  \ngain 2 e ⁻  \nvalence 2-⟶Noble gas configuration  \nGroup 17/ Halogens (ns np) gain 1 e ⁻  \nvalence 1-⟶Noble gas configuration  \nAtomic radii and ionic radii  \nIn a group it increases with Z In a period it decreases with Z  \nIonization energy  \n\n| realated with the metallic character: | IE depends on electron-‐ |\n| --- | --- |\n| higher IE , easier to eject an e ⁻ , higher metallic character | nucleus attraction |\n| In a group it increases from bottom to | In a period it increases |\n| top (from bigger to smaller radius)) | from left to right (when Zeff increases) |\n\nQuantity of energy a gaseous atom must absorb to be able to expel an electron  \nMagnetic properties  \nDiamag  \nnetic  \natom  \nall e ⁻ are paired and the individual magnetic effects cancel out  \nParama  \ngnetic  \natom  \nhas unpaired e ⁻ , the individual magnetic effects don't cancel out. These unpaired e ⁻ posses a magnetic moment that causes the atom to be attracted to an external  \nmagnetic field  \nSizes of atoms and ions  \nAtomis radius is hard to define , effective charge density is extended to infinity , but theefective atomic radius is where there is a 95% of the electron  \ncharge density  \nAtomis radius depends on the size of the electron cloud: from different shells it depends on the value of n , for a given shell it depends on the Zeff  \nPenetration:how close an electron  \ngets to the nucelus  \ns e ⁻ >p e ⁻ >d e ⁻ (in order of penetration ability)  \nScreening: how an outer e ⁻ is blocked from the nuclear charge by inner e ⁻  \nZeff=Z-σ  \nSlatter rules  \n| considered e ⁻ in an ns or np orbital |\n| --- |\n| ⦁all e ⁻ in ns and np orbitals with the same value of n contribute with σ=0 ,35 (for n= 1 , σ=0 ,30) |\n| ⦁all e ⁻ in orbitals with ni=ns , p-1 contribute with σ=0 ,85 |\n| ⦁all e ⁻ in orbitals with ni=ns , p-2 or lower contribute with σ= 1 |\n| considered e ⁻ in an nd or nf orbital |\n| ⦁all e ⁻ in same nd and nf orbitals contribute with σ=0 ,35 |\n| ⦁all the rest of e ⁻ (ni≤nd ,f) contribute with σ=0 ,35 |\n\nAmount of nuclear charge felt by an e ⁻ depends on its orbital and on the number of e ⁻ inbetween itself and the nucleus  \nElectron Affinity  \n\n| Related with the non- | the larger EA abs. value , the easier it is to |\n| --- | --- |\n| metallic character | gain an electron , the less metallic the element id |\n| In a period , increases from left to right (as Zeff) | In a group , increases from bottom to top |\n| *large number of anomalies | B. , N ,O , F |\n\nEnergy change that occurs when an atom in the gas phase gains an electron  \nBy resaraj  \n[cheatography.com/resaraj/](cheatography.com/resaraj/)  \nNot published yet.  \nLast updated 29th November, 2024. Page 1 of 1.  \nSponsored by ApolloPad.com Everyone has a novel in them. Finish Yours!  \n[https://apollopad.com](https://apollopad.com)","cbCaibhLYHMtx0b8","https://ap.wps.com/l/cbCaibhLYHMtx0b8","pdf",46109,"English","# The modern periodic table\n## Valence trends by group\n## Atomic and ionic sizes\n## Ionization energy and metallic character\n## Magnetic properties\n## Penetration, screening, and Zeff\n## Slater rules for shielding\n## Electron affinity trends","[{\"question\":\"How do valence electrons change across the main groups shown in the cheat sheet?\",\"answer\":\"It lists group-by-group behavior: alkali metals lose 1 e−, alkaline earth lose 2 e−, group 13 lose 3 e− (as stated), group 15 gains 3 e−, group 16 gains 2 e−, and group 17 gains 1 e−, each leading toward noble gas configurations.\"},{\"question\":\"What trends does the document state for atomic radii and ionic radii across a group and across a period?\",\"answer\":\"It states that within a group atomic radius increases with atomic number Z, while within a period it decreases with Z.\"},{\"question\":\"What do penetration and screening mean in this summary, and how is Zeff expressed?\",\"answer\":\"Penetration is defined as how close an electron gets to the nucleus, with s e− \\u003e p e− \\u003e d e−. Screening is how an outer electron is blocked by inner electrons, expressed as Zeff=Z-σ.\"}]","The periodic table Cheat Sheet - Quick Reference | PDF",1791925195]