1 / 5

Covalent Bond

Covalent Bond. = (valence or homopolar bond). 2 atoms share electrons (two electrons=single bond) to equal amounts. no polarity. H 2 -molecule most simple example. More detailed picture: Overlap of 1s electron orbitals of H-atoms. Molecular orbitals. Click for coupled pendula analogy.

helki
Download Presentation

Covalent Bond

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Covalent Bond = (valence or homopolar bond) 2 atoms share electrons (two electrons=single bond) to equal amounts no polarity H2-molecule most simple example

  2. More detailed picture: Overlap of 1s electron orbitals of H-atoms Molecular orbitals Click for coupled pendula analogy

  3. anti-binding anti-binding *-MO *-MO Energy Energy 1s (He atom B) 1s(He atom B) 1s(He atom A) 1s (He atom A) binding binding -MO -MO Why is there no covalent bond for two He atoms Again we start from the molecular orbitals (MO) described by symmetric and antisymmetric superposition of 1s-wavefunctions Reduction of energy by filling the -MO with 2 electrons compensated by energy required to fill *-MO covalent He-He bond energetically not favorable but He2+ stable molecule

  4. Idea of the quantitative approach QM-problem to solve: unperturbed H-atom 1: unperturbed H-atom 2: Interaction on approaching the atom2 to atom 1:

  5. Covalent Bond in Cl2 Electronic configuration of Cl Electronic configuration of N 3-fold Covalent Bond in N2

More Related