01:119:115 Lecture Notes - Lecture 5: Valence Electron, Atomic Nucleus

• School: Rutgers University
• Department: Biological Science
• Course: 01:119:115
• Professor: Daniel Stern Cardinale

Document Summary

*humans are composed of oxygen carbon hydrogen nitrogen and sodium is important but not a main comp. Contain potential energy and can be used to do work. Once the energy is used work must be done to regain that energy. E- is located in distinct shells each shell has the average distance from nucleus and e level. Potential energy is due to the distance of the electron from the nucleus. Valence shell is the outermost shell of the atom. 3d spaces where e- is found 90% of the time. E- are distributed among specific orbitals within a shell. Orbitals have distinctive size and shape **see fig 2. 8. Electrons are the only subatomic particles involved in reactions. 2 or more atoms fixed together in bonds. Chem formula- tells what type of composition of a molecular compound. Nucleur mass- sum of atomic mass of comp atoms. Emergent properties of compounds characteristics can differ from those of.