Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: A ƙarshen 1920s, Pauling ya fara buga takardu game da yanayin haɗin sinadarai. Tsakanin 1937 da 1938, ya ɗauki matsayi a matsayin George Fischer Baker Lecturer wanda ba shi da zama a Chemistry a Jami'ar Cornell. Duk da yake a Cornell, ya ba da jerin laccoci goma sha tara kuma ya kammala yawancin littafinsa mai suna The Nature of the Chemical Bond. Ya dogara ne akan aikinsa a wannan yanki wanda ya sami kyautar Nobel a Chemistry a 1954 "don bincikensa game da yanayin haɗin sinadarai da aikace-aikacensa don bayyana tsarin abubuwa masu rikitarwa". An ɗauki littafin Pauling "littafin da ya fi tasiri a kimiyyar sunadarai a wannan ƙarni da kuma Littafi Mai Tsarki". A cikin shekaru 30 bayan da aka buga bugu na farko a shekara ta 1939, an yi ƙaulin littafin fiye da sau 16,000. Ko da a yau, yawancin takardun kimiyya na zamani da kuma labarai a cikin mujallu masu mahimmanci sun ambaci wannan aikin, fiye da shekaru saba'in bayan wallafe-wallafen farko. Wani ɓangare na aikin Pauling game da yanayin haɗin sinadarai ya haifar da gabatarwarsa da manufar haɗuwa da haɗuwa. Duk da yake yana da al'ada don tunani game da electrons a cikin wani atomatik kamar yadda aka bayyana ta hanyar orbital na nau'ikan irin su s da p, sai ya juya cewa a cikin bayanin bonding a cikin kwayoyin, yana da kyau a gina ayyuka da ke raba wasu daga cikin kaddarorin kowane. Don haka 2s daya da 3 2p orbital a cikin carbon atom za a iya (lissafi) " gauraye " ko haɗuwa don yin kwatankwacin kwatankwacin guda huɗu (wanda ake kira sp3 hybrid orbital), wanda zai zama madaidaicin orbital don bayyana mahaɗan carbon kamar methane, ko 2s orbital za a iya haɗuwa da biyu daga cikin 2p orbital don yin kwatankwacin orbital guda uku (wanda ake kira sp2 hybrid orbital), tare da sauran 2p orbital unhybridized, wanda zai zama madaidaicin orbital don bayyana wasu mahaɗan carbon marasa ƙoshin kamar ethylene. Ana kuma samun wasu tsare-tsare na haɗuwa a cikin wasu nau'ikan kwayoyin.  Tambaya: Wane batu ne Pauling ya wallafa takardun game da ƙarshen 20s?
yanayin haɗin sinadarai