The document discusses the structure of oxides. It describes chemical formulas and how they indicate the elements present, their relative ratios, and molecular mass. Examples of ionic formulas like K2O and P2O5 are given along with their relative molecular masses. Lewis structures are also discussed, showing valence electrons and bonds. The molecular orbital model is introduced and differences between polar and nonpolar molecules like CO2 and SO2 are explained. Finally, the document distinguishes between molecular and non-molecular oxides based on their crystal lattice structure and bonding properties.
The document discusses the structure of oxides. It describes chemical formulas and how they indicate the elements present, their relative ratios, and molecular mass. Examples of ionic formulas like K2O and P2O5 are given along with their relative molecular masses. Lewis structures are also discussed, showing valence electrons and bonds. The molecular orbital model is introduced and differences between polar and nonpolar molecules like CO2 and SO2 are explained. Finally, the document distinguishes between molecular and non-molecular oxides based on their crystal lattice structure and bonding properties.
2. Zülal:
• tərkibində peptid rabitəsi vasitəsilə birləşmiş α-
aminturşu qalıqları olan mürəkkəb tərkibli və
mürəkkəb quruluşlu irimolekullu üzvi birləşmələrdir;
• 20 fərqli α-aminturşu qalıqlarından ibarətdir;
• toxumalar, fermentlər, immun sistemi, metabolik
proseslər və s.