24) Güçlü Etkileşimler - Kovalent Bağlı Bileşikler - Ünite 3 (9.Sınıf -TYT Kimya) 2022

Hello everyone! This week, Orbital Publications has covered Strong Interactions - Covalently Bonded Compounds in detail from the Interactions Between Chemical Species unit. Course Content 00:00 1) Covalently Bonded Compounds 00:18 A covalent bond is a type of bond formed by sharing electrons between atoms of the same or different types of nonmetals. Compounds formed by covalent bonds are called covalent compounds or molecular compounds. Atoms of the same type of nonmetal: F2, O2, N2... Atoms of different types of nonmetals: H2O, NH3, CO2... If the shared electrons are attracted equally, a nonpolar (non-polar, equipolar) covalent bond is formed. If they are attracted differently, a polar (polar) covalent bond is formed. NOTE: The polar/non-polar nature of the bond should not be confused with the polar/non-polar nature of the molecule. Representing Molecule Formation with Lewis Structure 12:22 RULES 1- The electron shell configurations of the elements are written. 2- The number of valence electrons is calculated to determine how many bonds an element will form. The element with the most bonds is selected as the central atom. 3- Bonds (dots) are placed between the atoms to complete the number of bonds. Two dots between atoms represent a line. In covalently bonded compounds, electron pairs shared are called bonding electron pairs or shared electron pairs. Electron pairs that do not participate in bonding between atoms are called non-bonding electron pairs or unshared electron pairs. Polar/Nonpolar Formation of Bonds and Molecules 16:13 (H2, Cl2, O2, N2, HCl, H2O, BH3, NH3, CH4, CO2) (CO, HCN, BeH2, C6H6, C2H5OH) H2 17:58 Cl2 19:24 O2 20:49 N2 21:43 HCl 22:38 H2O 23:44 NH3 26:11 BH3 28:06 CH4 30:47 CO2 31:11 CO 32:35 HCN 33:27 BeH2 34:08 C6H6 35:26 C2H5OH 37:20 PRACTICAL INFORMATION 35:57 In the Molecule If there is a symmetrical structure, it is nonpolar; if not, it is polar. If there is an electron pair on the central atom that does not participate in the bond, the molecule is polar. If there are three different types of atoms, the molecule is polar. Hydrocarbons are nonpolar if they contain only C and H, while organic compounds containing other elements besides C and H are polar. In diatomic molecules, if the atoms are of the same type, they are nonpolar; if they are different types, they are polar. Generally, the molecule is nonpolar in groups 2A, 3A, and 4A; it is polar in groups 5A and 6A. To order books, visit https://www.kitapisler.com Click the link for all Lecture PDFs! https://tinyurl.com/yy48x36e Semih BALMUK   / semihbalmuk​.  . Orbital Publications http://orbitalyayinlari.com/vcozum Books I have solved; 9th Grade Question Bank with Explanations 10th Grade Supplementary Education Program 11th Grade Supplementary Education Program 11th Grade Question Bank with Explanations ÖSYM Analysis (Previous Questions) Question Bank 2020 AYT Chemistry Branch Practice Exams (13x30) TYT Chemistry Branch Practice Exams (7x45) 12th Grade ODAM AYT Book (Organic Chemistry) The practice solutions are mine. You can access the books and solutions from the link above. #Chemistry #TopicExplanations #TYT #AYT