CHEM 1410 Study Guide - Midterm Guide: Valence Electron, Aufbau Principle, Angular Momentum

• School: University of Virginia
• Department: Chemistry
• Course: CHEM 1410
• Professor: Lisa Morkowchuk

Document Summary

Periodic law when elements are arranged by atomic number, they exhibit patterns in terms of properties. Electron configuration the distribution of electrons within the orbitals of the atom within a element. Spin quantum number either +1/2 or -1/2, that indicates the direction of electron spin. Shielding ability of other electrons (inner) to lessen the nuclear attraction for outer electrons. Effective nuclear charge (zeff) nuclear charge an electron actually experiences as a result of shielding effects. Penetration process by which an outer electron moves through the region occupied by core electrons to spend part of its time closer to the nucleus; increases effective nuclear charge. Aufbau principle approach for building up atoms by adding one proton at a time to the nucleus and one electron to obtain the ground-state electron configurations of the elements. Orbital diagram depiction of orbital occupancy in terms of electron number and spin shown by series of arrows.