[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-665593-105":59,"doc-detail-665593-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","chemical-bonding-andmolecular-structure-unit-objectives-and-theories","CHEMICAL BONDING ANDMOLECULAR STRUCTURE - Unit Objectives and Theories","","Chemical Bonding and Molecular Structure unit explains why atoms combine, which combinations are possible, and how molecules obtain definite shapes by introducing major bonding theories. It covers Kössel-Lewis approach, including octet stability, Lewis symbols, and how electron transfer forms ions and electrovalent bonds, alongside shared-electron covalent bond formation. It also outlines the role of periodic trends and sets up later geometry and bonding concepts.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":40,"@type":76,"position":81},"https://docshare.wps.com/document/research-report/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/chemical-bonding-andmolecular-structure-unit-objectives-and-theories/665593/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/chemical-bonding-andmolecular-structure-unit-objectives-and-theories/665593.png","ImageObject",300,407,{"name":92,"@type":93},"QWQ","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-30","2026-10-29",true,{"@type":102,"interactionType":103,"userInteractionCount":81},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What are the main objectives of the unit on chemical bonding and molecular structure?","Question",{"text":112,"@type":113},"The unit aims to explain the Kössel-Lewis approach, octet rule and its limits, how to draw Lewis structures, the formation and types of bonds, VSEPR-based geometry prediction, valence bond and molecular orbital ideas, hybridisation, and hydrogen bonding.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How does the Kössel-Lewis approach explain chemical bonding?",{"text":117,"@type":113},"It links bonding to electron arrangements that achieve a stable octet. Atoms form bonds either by transferring electrons to make ions (as in NaCl) or by sharing electron pairs to complete outer shells (as in Cl2, H2, F2).",{"name":119,"@type":110,"acceptedAnswer":120},"What is an electrovalent (ionic) bond and how is electrovalence determined?",{"text":121,"@type":113},"The electrovalent bond results from electrostatic attraction between positive and negative ions formed by electron transfer. Electrovalence equals the unit charge number on the ion (e.g., calcium +2 and chlorine −1).","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},665593,1793305065,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":39,"category_name":40,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":81,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":129,"read_time":144},962094510011,"https://ap-avatar.wpscdn.com/davatar_155a257f0dc6eb9ab79c44ca47cae57d","# CHEMICAL BONDING ANDMOLECULAR STRUCTURE\n\n## Objectives\n\nAfter studying this Unit,you will beable to  \n·  understand Kössel-Lewisapproach to chemical bonding;  \n·explain the octet rule and itslimitations,drawLewis structuresof simple molecules;  \n·explain the formation of differenttypes of bonds;  \n·describe the VSEPR theory andpredict the geometry of simplemolecules;  \n·explain the valence bondapproach for the formation ofcovalent bonds;  \n·predict the directional propertiesof covalent bonds;  \n·explain the different types ofhybridisation involving s,p andd orbitals and draw shapes ofsimple covalent molecules;  \n·  describe the molecular orbitaltheory of homonuclear diatomicmolecules;  \n·explain the concept of hydrogenbond.  \n11082CHO4  \nScientists are constantly discovering new compounds,orderly arranging the facts about them,trying to explainwith the existing knowledge,organising to modify theearlier views or evolve theories for explaining the newlyobserved facts.  \nMatter is made up of one or different type of elements.Under normal conditions no other element exists as anindependent atom in nature,except noble gases.However,a group of atoms is found to exist together as one specieshaving characteristic properties.Such a group of atomsis called a molecule.Obviously there must be some forcewhich holds these constituent atoms together in themolecules.The attractive force which holds variousconstituents (atoms,ions,etc.)together in differentchemical species is called a chemical bond.Since theformation of chemical compounds takes place as a result ofcombination of atoms of various elements in different ways,it raises many questions.Why do atoms combine?Why areonly certain combinations possible?Why do some atomscombine while certain others do not?Why do moleculespossess definite shapes?To answer such questions differenttheories and concepts have been put forward from timeto time.These are Kössel-Lewis approach,Valence ShellElectron Pair Repulsion(VSEPR)Theory,Valence Bond(VB)Theory and Molecular Orbital (MO)Theory.The evolutionof various theories of valence and the interpretation ofthe nature of chemical bonds have closely been related tothe developments in the understanding of the structureof atom,the electronic configuration of elements and theperiodic table.Every system tends to be more stable andbonding is nature's way of lowering the energy of the systemto attain stability.  \n## 4.1 KÖSSEL-LEWIS APPROACH TOCHEMICAL BONDING\n\nIn order to explain the formation of chemicalbond in terms of electrons,a number ofattempts were made,but it was only in1916 when Kössel and Lewis succeededindependently in giving a satisfactoryexplanation.They were the first to providesome logical explanation of valence which wasbased on the inertness of noble gases.  \nLewis pictured the atom in terms of apositively charged 'Kernel’(the nucleus plusthe inner electrons)and the outer shell thatcould accommodate a maximum of eightelectrons.He,further assumed that theseeight electrons occupy the corners of a cubewhich surround the Kernel'.Thus the singleouter shell electron of sodium would occupyone corner of the cube,while in the case ofa noble gas all the eight corners would beoccupied.This octet of electrons,representsa particularly stable electronic arrangement.Lewis postulated that atoms achievethe stable octet when they are linked bychemical bonds.In the case of sodium andchlorine,this can happen by the transfer ofan electron from sodium to chlorine therebygiving the Nat and Cl-ions.In the case ofother molecules like Cl₂,H₂,F₂,etc.,the bondis formed by the sharing of a pair of electronsbetween the atoms.In the process each atomattains a stable outer octet of electrons.  \nLewis Symbols:In the formation of amolecule,only the outer shell electrons takepart in chemical combination and they areknown as valence electrons.The inner shellelectrons are well protected and are generallynot involved in the combination process.  \nG.N.Lewis,an American chemist int","cbCaii3vmqPeJmJZ","https://ap.wps.com/l/cbCaii3vmqPeJmJZ","pdf",4543597,36,"English","# Objectives\n## 4.1 Kössel-Lewis Approach to Chemical Bonding\n## Lewis Symbols: Valence Electrons and Notations\n## Significance of Lewis Symbols\n## Kössel’s Postulations and Ion Formation\n## Electrovalent Bond and Electrovalence","[{\"question\":\"What are the main objectives of the unit on chemical bonding and molecular structure?\",\"answer\":\"The unit aims to explain the Kössel-Lewis approach, octet rule and its limits, how to draw Lewis structures, the formation and types of bonds, VSEPR-based geometry prediction, valence bond and molecular orbital ideas, hybridisation, and hydrogen bonding.\"},{\"question\":\"How does the Kössel-Lewis approach explain chemical bonding?\",\"answer\":\"It links bonding to electron arrangements that achieve a stable octet. Atoms form bonds either by transferring electrons to make ions (as in NaCl) or by sharing electron pairs to complete outer shells (as in Cl2, H2, F2).\"},{\"question\":\"What is an electrovalent (ionic) bond and how is electrovalence determined?\",\"answer\":\"The electrovalent bond results from electrostatic attraction between positive and negative ions formed by electron transfer. Electrovalence equals the unit charge number on the ion (e.g., calcium +2 and chlorine −1).\"}]","CHEMICAL BONDING ANDMOLECULAR STRUCTURE - Unit Objectives and Theories | PDF",91]