CHEM 2443 Lecture Notes - Lecture 4: Potassium Bromide, Sodium Chloride, Pauli Exclusion Principle
Document Summary
Electron configuration 2 nd row: each individual orbital can hold no more than 2 electrons, electrons have the property of spin, which is associated with a magnetic dipole. The spin quantum number: self-rotation of the electron gives rise to an angular momentum vector: each electron will have spin and the arrow is used to indicate an electron with a certain spin quantum number. A single orbital containing two electrons (filled) is represented by 2 opposed arrows. This indicates that when an orbital contains two electrons, those 2 electrons are spin- paired. 3 2p orbitals), each orbital will fill with one electron before any orbitals contain 2. Electronic configuration & the aufbau principle: electrons have like charges. An atom in the second row: to construct an atom, there is a 1s orbital, a 2s orbital, and three 2p orbitals in the second row of equal energy. The 3 p-orbitals have the same shape and energy.
