PPT-CHE2060 Topic 1: Atoms, orbitals & bonding

Atoms Orbitals amp Bonding Topics Very quick history of chemistry What is organic chemistry Atomic models nuclear to quantum All about orbitals How orbitals fill electron configuration. (. Benzene. ). 140 pm. 140 pm. 140 pm. 140 pm. 140 pm. 140 pm. All C—C bond distances = 140 pm. Benzene. empirical formula. = CH. 140 pm. 140 pm. 140 pm. 140 pm. 140 pm. 140 pm. . 146 pm. 134 pm. 10. Molecular Geometry and Bonding Theory. 2. The subject of molecular geometry deals with shapes of molecules. Recall that a Lewis structure is a two-dimensional representation of a molecule or ion; its intent is to show how the valence electrons of atoms are distributed in the molecule. A Lewis structure does not necessarily have to depict the actual shape of the molecule or ion, but we can use it deduce what the actual shape is.. Elements with high electronegativities (non-metals) will not give up electrons. Bonds are not formed by a transfer of electrons, they are formed by sharing electrons.. Molecules are neutral groups of covalently bonded atoms. Metals. Look at the Periodic Table…. 75% of elements are metals!. Metals. They can vary a lot…. General Properties of Metals. Dense. Malleable. Ductile. Good conductors of heat and electricity. Shiny Lustre. The 2p. z. orbitals overlap in head-to-head fashion,. so these bonds are.... s. bonds.. -- the corresponding MOs are: . s. 2p. and . s. *. 2p. The other 2p orbitals (i.e., 2p. x. and 2p. y. ) overlap in. Orbitals. Organic compounds are organised into groups according to similarities and differences in their structure.. Groups of atoms within a molecule give the molecule specific characteristic properties.. Prepared By:-. Swastik Mishra Upasana Nath. Rahul Kanungo Pratik Patnaik. 1. st. Shift. Kendriya Vidyalaya No-1, . BHubaneswar. Kossel Lewis Approach. Kossel Lewis Approach To Chemical Bonding. In 1916, Kossel and Lewis were the first to become independently successful in giving a satisfactory explanation about the formation chemical bond in terms of electrons. . Text:. Ch 8 (all except sections 4,5 & 8). Ch 9.1 & 9.5. Ch 10.1-10.7. My Name is Bond. Chemical Bond. PART 3: Hybridization & . Delocalization of Electrons. Hybridization . Hybridization:. Do . Now: Identify . Bond Type from Formula. Au. Ag. CO. 2. Li. 3. N. Na. 2. S. Mg. CsF. H. 2. O. NaCl. SO. 2. Cu. CH. 4. Covalent. Covalent. Covalent. Covalent. Ionic. Ionic. Ionic. Ionic. Metallic. metal and oxygen orbitalsXiaoshan XuApproximation of ionic/valence bondingLiF-The lithium atom loses an electron and the fluorine atom gains an electron and they are both chargedValence of the Li and Edited by Margaret Hilton. Honors Organic Chemistry. University of Utah. Molecular Orbitals. Lennard-Jones. , J.E. (1929) Trans.Faraday Soc. 25, 668. . . Link. 1929. - . John . Lennard. -Jones . describes. DE Chemistry. Dr. Walker. Hybridization and the Localized Electron Model. Hybridization. The . mixing of two or more atomic orbitals of similar energies on . the same . atom . to . produce new orbitals of equal . The Extension of Valence Bond Theory. Valence Bond theory does a good job in explaining which . orbitals. are involved in bonding.. The break down comes when we try to explain molecular shape.. Water, according to VBT should have a 90. Metallic Bond – the force that holds metal atoms together. Metals do not form covalent bonds with one another because they do not have enough electrons in their outer shells to form stable octets..