 | Term | Definition |
| |
quantum |
the amount of energy required to move an electron from its present energy level to the next higher one |
| |
atomic orbitals |
the regions around the nucleus within which the electrons have the highest probability of being found |
| |
energy level |
a region in space around the nucleus of an atom where an electron is likely to be moving |
| |
quantum mechanical model |
the modern description of the behavior of electrons in atoms |
| |
electron configuration |
the most stable arrangement of electrons around the nucleus of an atom |
| |
aufbau principle |
electrons enter orbitals of lowest energy first |
| |
pauli exclusion prinicple |
an atomic orbital may describe at most two electrons |
| |
hunds rule |
when electrons occupy orbitals of equal energy, one electron enters each orbital untill all the orbitals contain one electron with parallel spins |
| |
neon |
1s2 2s2 2p6 |
| |
photons |
light quanta |
| |
de broglies equation |
predicts that all matter exhibits wavelike motions |
| |
visible light |
example of electromagnetic radiation |
| |
ground state |
the lowest energy level for a given electron |
| |
wavelength |
the distance between two consecutive wave crests |
| |
amplitude |
waves height from orgin to crest |
| |
frequency |
# of wave cycles to pass a given point per unit of time |
| |
hertz (hz) |
si unit of cycles per second |
