CHEM 1127Q Chapter Notes - Chapter 6-7: Principal Quantum Number, Electron Shell, Aufbau Principle

• School: UConn
• Department: Chemistry
• Course: CHEM 1127Q
• Professor: Joseph De Pasquale

Document Summary

Arrangement of electrons in orbitals of atoms determines many chemical properties of the atom. Energy of orbitals , principal quantum number (n) In atoms with 2+ electrons, energy of orbitals within shells as sp>d>f) Electrons closer to the nucleus slightly repel farther electrons (slightly opposing stronger force of electron-nucleus attraction) Increasing n value has more influence on energy than increasing l (in small atoms) Trends are comparable and cannot be predicted (larger atoms) The number of the principal quantum shell, n, The letter that designates the orbital type (the subshell, l) A superscript number that designates the number of electrons in that particular subshell. Aufbau principle - procedure to determine the electron configuration for any atom by.