Azot atomining tashqi qavatida nechta elektron bor?, Azot qaysi guruh elementiga kiradi?, Fosforning elektron konfiguratsiyasi qaysi?, Azot molekulasi (N₂) da qanday bog‘ mavjud?, N₂ molekulasida bog‘ turi:, NH₃ molekulasining fazoviy tuzilishi qanday?, NH₃ molekulasida bog‘lanish burchagi taxminan nechaga teng?, NH₃ molekulasida bog‘lanish burchagi taxminan nechaga teng?, Fosforning eng barqaror allotrop shakli:, PCl₃ molekulasining shakli qanday?, PCl₅ molekulasining fazoviy tuzilishi:

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