CHEM 1201 : Exam 3 Study Guide Docx

• School: LSU
• Department: Chemistry
• Course: CHEM 1201
• Professor: All

Document Summary

Example: n = 2 shell is larger than n = 1 shell. Example: screening of 2s, 2p electrons by 1s electrons makes the n = 2 shell larger. The energy of an electron depends on: Both depend on what orbital the electron is in. Average nuclear charge an electron feels including average effects of all electron <=> electron repulsions. Screening is more important for f > d > p > s orbitals than orbitals within the same sub shell. Example: 2n experiences more screening then 1n. Effective nuclear charge gets higher as it goes down and to the right. Example: arsenic (as) has a higher effective nuclear charge than sodium (na) Atomic radius increases as it goes down and to the left. Example: potassium (k) has a larger radius than sulfur (s) Number of electrons go up atom size goes up. Be2+ is smaller than be and be2- is larger than be.