CHEM 1005 Study Guide - Final Guide: Pauli Exclusion Principle, Fluorine, Effective Nuclear Charge
3 Nov 2016
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Concept 5. 2: an element that is lustrous, conducts heat and electricity well, loses e- to form cations, pauli exclusion principle each electron in an atom has a unique set of quantum numbers. No two electrons in a chemical species can be described by same wave function. The aufbau(construction) principle: ground state = most stable, this principle states that electrons are placed into atomic orbitals (starting with lowest energy followed by higher energy electrons) Chapter 6: fundamentals of chemical bonding 16-11-03 12:11 pm. A covalent bond arises from the mutual attraction of the bonding electrons to the two nuclei. The hydrogen molecule: contains two nuclei and two electrons (diatomic, when two hydrogen atoms come together to form covalent bond, each nucleus attracts the opposite electron, pulling them closer. At the same time the two nuclei repel each other. These repulsive attractions drive the atom apart: so the sum of the attractive energies > the sum of the repulsive energy.
