CHEM 1A Lecture Notes - Lecture 7: Van Der Waals Radius, Ionic Radius, Covalent Radius

• School: Berkeley
• Department: Chemistry
• Course: CHEM 1A
• Professor: Philip Geissler

Document Summary

Half the distance between the center of neighboring atoms. Metal : half the distance between the centers in a solid. 2 atoms sample joined by covalent (" covalent bonds radius. Van der waals radius (cid:8869) half the distance between. 2 atoms in a solidified sample of the gas. Generally , the atomic radii increases right to left and top to bottom. Distance between centers of ions in an ionic solid. Ionic radius increases from top to bottom and right to left (separated into cations + anions) cations are. Anions are generally generally smaller than parent atoms larger than parent atoms. Ions with the same number of electrons are called isoelectronic eg . Energy required to remove an electron and transfer to another atom. Min energy needed to remove an e- from a neutral atom. Min energy needed to remove an e- from a singly charged cation. Ionization energy generally increases bottom to top and left to right.