Molecular Orbitals : combine atomic orbitals (AOs) from all the atoms in a molecule into the same number of molecular orbitals. MOs have different shapes, sizes, and energies, and have two electrons max. per orbital (Pauli Exclusion Principle).By stewart-velazquez
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MO diagram for homonuclear diatomic molecules Li 2 through N 2. MO diagram for homonuclear diatomic molecules O 2 and F 2. N 2 Lewis diagram :N N: each atom supplies 5 electrons; a total of 10 electrons must be assigned N 2 : s 2s 2 s * 2s 2 p 2p 4 s 2p 2 Bond order for N 2
MO diagrams for homonuclear diatomics. s u * (z 2 ). p g * (xz, yz). d u * (xy, x 2 -y 2 ). d g (xy, x 2 -y 2 ). d. d. p u (xz, yz). s g (z 2 ). M 2+. M 2+. M 2 4+. Bonding scheme for dimers of transition metal dications, M 2+. Example: dimerization of Cr 2+ to form Cr 2 4+.
MO Diagrams for Diatomic Molecules. Chapter 5 Friday, October 11, 2013. E σ. E π. 2 p b. 2 p a. 2 s b. 2 s a. Homonuclear Diatomic Molecules. What happens when we move to more complicated systems? Consider O 2 .
Ch 5 Covalent Bonding Remember… Covalent molecules are made from 2 or more nonmetals and the electrons are “shared.”. Diatomic Molecules. Gases made of two atoms of the same element. Naming – just use the element name. Hydrogen. Fluorine. Prefixes Used in Covalent Molecules.
Diatomic Molecules. Can’t exist by themselves( have a 2 subscript) 7 of them Ways to remember….. BrINClHOF (say Brinckle-hoff ) (bromine-iodine-nitrogen-chlorine-hydrogen-oxygen-fluorine). Hydrogen + the rest that forms a 7 on periodic table.
Diatomic molecules. L. L. L. When we treat the free rotor as two masses at a fixed distance, we find the energy is dependent on the orbital quantum number:. L. Molecules can absorb and emit electromagnetic radiation in a similar fashion to atoms.
Homonuclear & Heteronuclear bonds. Hydrogen peroxide (H 2 O 2 ). Hydrazine (N 2 H 4 ). Ethane (C 2 H 6 ). Homonuclear bonds. Hetronuclear bonds. Polar bonds. IONIC COMPOUNDS.