CHE 131 Chapter Notes - Chapter 8: Electron Configuration, Metal, Noble Gas

• School: Stony Brook University
• Department: Chemistry
• Course: CHE 131
• Professor: Troy Wolfskill

Document Summary

All physical and chemical behaviors of the elements and their compounds are based on electron configuration and effective nuclear charge: trends in metallic behavior heat and electricity, are malleable, and lose electrons to nonmetals. Metals- typically shiny solid, have moderate to high melting points,good conductors of. Nonmetals- no shiny, low melting points, poor conductors- mostly crumbly solids or. Metallic behavior decreases from left to right across a period and increases down a gases and tend to gain electrons from metals group. Down a main group- increase in metallic behavior down a group is consistent w increase in size and a decrease in ie, more obvious w groups that have more than one kind of element ; Elements at the top form anions, toward the bottom form cations. Across a period- decrease in metallic behavior down a period is consistent w a decrease in size, an increase in ie and more negative ea.